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

Abstract

The invention proposes a mattress core (10) for a piece of furniture for lying on, in particular for a child's mattress. The mattress core (10) has at least one mattress-frame element (11) and at least one mattress-inlay element (12), wherein in at least one sub-region of an outer surface of the mattress core (10) that is formed as a surface for a user to lie on, the at least one mattress-frame element (11) has at least one aperture (30), and wherein the at least one mattress-inlay element (12) is removably arranged at least partly in the at least one aperture (30) of the at least one mattress-frame element (11).

Description

[0001] Mattress core for a reclining furniture and children's mattress

[0002] Reference to related applications

[0003] This application claims priority from German utility model application No. 20 2022 105 040.6, filed on September 7, 2022, which is incorporated in its entirety by reference into this document.

[0004] Field of the invention

[0005] The present invention relates to a mattress core for a piece of reclining furniture and to a mattress comprising such a mattress core. Furthermore, the invention relates to a mattress core for a children's mattress and to a children's mattress. Furthermore, the invention relates to the use of a mattress core for a children's mattress.

[0006] background

[0007] Mattress cores for reclining furniture, especially mattress cores for children's mattresses, are typically made from a single-piece mattress element, such as foam, with a uniform degree of firmness. Mattress cores can also be constructed in multiple parts, with several mattress elements stacked on top of each other and glued together.

[0008] Common mattress cores are therefore relatively bulky and cumbersome. Cleaning mattress cores is generally impossible or only possible with specialized equipment. However, cleaning may be desirable, especially if mattress cores or mattresses are excessively or frequently soiled, as is often the case with children or elderly users.

[0009] Due to the insufficient cleanability, conventional mattress cores or mattresses are replaced when they become dirty, which is costly and disadvantageous from an ecological point of view.

[0010] Summary of the invention

[0011] The present invention therefore provides an improved mattress core for a piece of furniture, in particular for a children's mattress, as well as an improved mattress and / or children's mattress, which is able to at least partially overcome the disadvantages of known mattress cores described above.

[0012] The invention is defined in the independent claims. Further developments and embodiments of the invention are specified in the dependent claims and the following description.

[0013] The present disclosure relates to a mattress core for a piece of reclining furniture, in particular a mattress core for a children's mattress, as well as a mattress with such a mattress core. Specifically, the mattress can be designed as a children's mattress and / or a mattress for children. Furthermore, the invention relates to the use of a mattress core for a children's mattress. All preceding and following descriptions of a mattress core apply equally to the mattress or children's mattress, and vice versa.

[0014] 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 can be designed for a children's mattress and / or configured 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 in at least a partial region of an outer surface of the mattress core configured as a lying surface for a user. The at least one mattress insert element is furthermore arranged so as to be removably arranged at least partially in the at least one recess of the at least one mattress frame element.

[0015] For example, the mattress insert element can be inserted into the recess of the mattress frame element and / or removed, 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 even enable this 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 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 wear than the mattress frame element, for example because it can provide part of the lying surface for the user.Because the mattress insert element can be removed from the recess, it can advantageously be cleaned and / or washed without necessarily having to clean the mattress frame element. Furthermore, the two-part design of the mattress core significantly reduces drying time after cleaning the mattress core.

[0016] Such increased cleanability can be particularly advantageous when using the mattress core for a child's mattress or as a children's mattress. It should be noted at this point that the mattress core according to the invention can be advantageously used not only for children's mattresses, but also for mattresses for adults, in particular the elderly or those in need of care. For example, if the mattress insert becomes soiled with urine, other bodily fluids, or other types of dirt, it can be removed from the recess as needed and thoroughly and quickly cleaned, washed, and / or disinfected, for example, in any conventional washing machine. Immediately after cleaning (or after an optional short drying time), the mattress insert can be reinserted into the recess, and the mattress core is ready for use again. Overall, this significantly improves hygiene.

[0017] Due to the separability and improved cleanability of the mattress insert and the mattress frame, cleaning costs and associated transport costs, such as transporting the mattress to a dry cleaner, can be avoided. Regular replacement of the mattress core, as is the case with conventional mattress cores, can also be eliminated. Furthermore, the improved washability and cleanability can significantly increase the lifespan of the mattress core. Overall, the sustainability of the mattress core and the mattress can be significantly improved.

[0018] The at least partial, in particular substantially complete, accommodation of the at least one mattress insert element in the at least one recess can further 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 accommodated and / or arranged in the recess in a manner that prevents it from falling out and / or slipping.

[0019] The term mattress core is to be understood broadly here and includes all devices or elements that provide a lying surface for a user and can form a mattress or can be a component of a mattress. The mattress core can, for example, be made entirely or at least partially from foam, latex, natural fiber, rubber, natural products and / or a spring core. Other materials are, however, possible. The mattress core can be made in two parts, consisting of 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 can be made in several parts.

[0020] The mattress core can also have multiple lying areas or 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 needs of individual body regions. For example, this can enable an ergonomic lying position, especially when the user is lying on their back or side.

[0021] In principle, the mattress core can be of any size and / or firmness. In particular, the mattress core can have a base area of ​​approximately 60x120 cm. 2 , 60x140 cm 2 , 70x140 cm 2 , 70x160 cm 2 , 80x160 cm 2 , 80x170 cm 2 , 70x170 cm 2 , 80x180 cm 2 , 80x190 cm 2 , 80x200 cm 2 , 90x190 cm 2 , 90x200 cm 2, 90x220 cm 2 , 100x190 cm 2 , 100x200 cm 2 , 100x220 cm 2 , 120x200 cm 2 , 140x200 cm 2 , 140x220 cm 2 , 160x200 cm 2 , 160x220 cm 2 , 180x200 cm 2 , 180x220 cm 2 , 200x200 cm 2 , or 200x220 cm 2 Alternatively or additionally, the mattress core can have any degree of firmness, for example, a firmness level from H1 to H5.

[0022] The mattress core has a top surface and a bottom surface opposite the top surface, which can be connected at the sides by corresponding side surfaces. The top surface, the bottom surface, 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 top and / or bottom surface of the mattress core, which can serve as a support surface for a user, for example, in a lying position, in a supine position, and / or in a side position.

[0023] The surface of the top, bottom, and / or side surfaces of the mattress core can be smooth and / or profileless. Alternatively, a profile can be formed in at least a portion of one of the top, bottom, side surfaces, and / or the lying surface, for example, to locally modify the elastic properties of the mattress core. Possible profiles can include one or more beads, grooves, recesses, transverse grooves, openings, notches, or the like.

[0024] The term "children's mattress" is to be understood broadly here and includes all mattresses or mattress cores specifically designed for children, i.e., people in childhood, i.e., the period of a person's life from birth to sexual development (puberty). Children's mattresses can have a size or base area of, for example, approximately 60x120 cm. 2 , 60x140 cm 2 , 70x140 cm 2 , 70x160 cm2 , 80x160 cm 2 , 80x170 cm 2 , 70x170 cm 2 , 80x180 cm 2 The firmness 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 and thus be softer than mattresses or mattress cores for adults.

[0025] The term "reclining furniture" is to be understood broadly here and can include all furniture or furnishings on which a person and / or an animal can sit and / or lie. Examples of reclining furniture include armchairs, sofas, beds, mats, chairs, and loungers. Reclining furniture can optionally have a slatted frame or sprung base on which a mattress core and / or a mattress can be placed.

[0026] The term "mattress frame element" is to be understood broadly here and includes all elements of any geometry, shape, and material that have at least one recess into which the at least one mattress insert element can be inserted or removably arranged. The mattress frame element can be formed in one piece or in multiple pieces, wherein the multiple parts of the multi-piece mattress frame element can be connected to one another detachably or non-detachably, in particular glued or welded. The mattress frame element can have any shape. Exemplary shapes of the mattress frame element or the base of the mattress element can be square, rectangular, triangular, circular, oval, or polygonal, but are not limited to these.

[0027] The mattress frame element can, in particular, have a substantially rectangular base area and / or be substantially cuboid-shaped. The mattress frame element can have a height, a width, and a length, for example, with a width / length ratio of approximately 25 to 75%, in particular approximately 50%, a height / length ratio of approximately 5 to 20%, in particular approximately 7%, and a height / width ratio of approximately 10 to 25%, in particular approximately 16%. However, other ratios are possible.

[0028] The mattress frame element has a top side, a bottom side, and at least one side surface. The surface of the top side, the bottom side, and / or the at least one side surface of the mattress frame element can be a smooth surface. Alternatively, a profile can 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, to locally modify the elastic properties of the mattress core. Possible profiles can include one or more beads, grooves, recesses, transverse grooves, openings, notches, or the like.

[0029] The mattress frame element can have a compression hardness of approximately 2 kPa to 8 kPa, for example, approximately 2 kPa to 4 kPa, in particular approximately 2.5 kPa to 3.5 kPa, for example, approximately 3.2 kPa, but this is not limited to this. Other compression hardnesses are possible, however. 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, bottom, and / or side surfaces of the mattress frame element can be larger than the surface area of ​​the top, bottom, and / or side surfaces of the at least one mattress insert element.

[0030] The term recess is to be understood broadly here and can refer to a depression, opening and / or cutout 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 can 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 can also extend from at least part of a surface opposite the user's lying surface into the interior of the at least one mattress frame element.

[0031] 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 or placed in one or both recesses.

[0032] The at least one recess can have a volume that can be less 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 thereto.

[0033] The at least one recess and / or the at least one

[0034] The mattress insert element can have a length, a width, and a depth, for example with a width / length ratio of approximately 30 to 50%, in particular approximately 41%, a depth / length ratio of approximately 0.01 to 5%, in particular approximately 0.02%, a depth / width ratio of approximately 0.05 to 5%, in particular approximately 0.06%. However, other ratios are possible. Alternatively or additionally, the recess can have a ratio between the width of the recess and the width of the at least one mattress frame element of approximately 50% to approximately 100%, in particular approximately 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 approximately 10% to 100%, in particular approximately 30% to 95%, but is not limited thereto.Alternatively or additionally, the recess may have 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%.

[0035] The recess has at least one bottom surface (or underside), one top surface (or top) 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 have, but is not limited to, a smooth surface and / or a contoured surface. The recess may have, but is not limited to, a uniform depth, a plurality of regions with different depths, regions with a constant depth, and / or regions with decreasing and increasing depths.

[0036] 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 that 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 touching 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 multiple pieces, wherein the multiple parts of the multi-piece mattress insert element can be connected to one another detachably or non-detachably, in particular glued or welded.

[0037] The at least one mattress insert element can have any desired shape. Exemplary shapes of the at least one mattress insert element can be square, rectangular, triangular, circular, oval, or polygonal, but are not limited to these. The at least one mattress insert element can have a height, a width, and a length, for example, a width / length ratio of approximately 30 to 50%, in particular approximately 41%, a height / length ratio of approximately 0.01 to 5%, in particular approximately 0.02%, and a height / width ratio of approximately 0.05 to 5%, in particular approximately 0.06%.Alternatively or additionally, the at least one mattress insert element can have a ratio between the width of the at least one mattress insert element and the width of the at least one mattress frame element of approximately 50% to 100%, in particular approximately 70% to 95%, a ratio between the length of the at least one mattress insert element and the length of the at least one mattress frame element of approximately 70% to 100%, in particular approximately 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 approximately 30% to 95%, but is not limited thereto.

[0038] Alternatively or additionally, the at least one mattress insert element can have a height substantially 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 can be smaller, identical to, or greater than the height of the at least one recess.

[0039] The at least one mattress insert element has a top surface, a bottom surface, and at least one side surface. The surface of the top surface, the bottom surface, 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.

[0040] For example, one or more side surfaces of the recess or the mattress frame element can 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 designed to correspond or complement each other, so that both surfaces are in full or at least partial contact and / or the contours can at least partially interlock.

[0041] The at least one mattress insert element can have a compression hardness of approximately 2 kPa to 8 kPa, for example, approximately 2 kPa to, in particular, approximately 2.5 kPa to 3.5 kPa, for example, 3.2 kPa, but is not limited thereto. 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 multiple mattress insert elements, each mattress element of the plurality of mattress elements can have the same compression hardness or a different compression hardness.

[0042] The area of ​​the top, bottom and / or side surfaces of the at least one mattress insert element may be smaller than the corresponding area of ​​the top, bottom and / or side surfaces of the at least one mattress frame element.

[0043] The volume of the at least one mattress insert element can be smaller, identical to, 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 down on the mattress core. The at least one mattress insert element can be arranged in the recess on both sides, i.e. the mattress element can be inserted into the recess with its upper side or its underside first.Therefore, when the mattress insert is received in the recess, the top surfaces of the recess and the mattress insert or the top surface of the recess and the bottom surface of the mattress insert may be in contact with each other.

[0044] The term "removable" in the context of the present invention can be understood to mean that the mattress insert element can be inserted into and removed from the recess, for example, by machine 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 received 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 non-positive locking, in particular frictional locking, but is not limited thereto.

[0045] For example, the mattress insert element can be held in the recess in a form-fitting manner. For example, the mattress insert element can be elastically deformed, such as squeezed, when inserted into the recess. After insertion of the mattress insert element into the recess, it can elastically deform into its original shape in order to essentially completely fill the recess and be held therein. This can provide a slip-proof arrangement of the at least one mattress insert element in the recess. Optionally, however, the mattress insert element can also be glued and / or welded to the mattress frame element, at least in some regions. 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 hook-and-loop fastener.

[0046] According to one embodiment, the at least one mattress insert element can be inserted and / or removed into the at least one recess of the at least one mattress frame element via the outer surface of the mattress core designed as a lying surface for the user.

[0047] Inserting or removing the at least one mattress insert element into the at least one recess via the outer surface of the mattress core, which serves as a lying surface for the user, can enable simple and uncomplicated handling of the mattress or mattress core. This also allows the outer surface of the mattress insert element to be increased in proportion to the lying surface, which can have a beneficial effect on hygiene, for example, since the mattress insert element can be washed and cleaned separately.

[0048] In a further embodiment, the at least one recess is designed such that the at least one mattress frame element extends around and / or encloses the at least one mattress insert element arranged in the at least one recess at least along a portion of an outer circumference, in particular over its entire circumference. In other words, the mattress frame element can extend around and / or enclose the mattress insert element at least along a portion of the outer circumference. As a result, the mattress insert element can lie flush against the mattress frame element along at least a portion of the outer circumference. For example, this can prevent unevenness in the lying surface and increase lying comfort. Furthermore, a step edge can be provided, for example by that portion of the mattress frame element which extends around the mattress insert element along the outer circumference.In other words, a step edge can be formed by the mattress frame element, which at least partially surrounds the mattress insert element on its outer circumference.

[0049] In a further embodiment, the at least one mattress insert element is accommodated tightly and / or flush in the at least one recess. This allows the mattress insert element to be held in the recess with a positive and / or force fit. Additional fastening means, such as adhesive bonding, can therefore be omitted. This, in turn, can advantageously result in reduced pollutant loads in the mattress core.

[0050] The term "close-fitting" is to be understood broadly here and includes that the at least one mattress insert element is and / or stands with at least one side surface in direct contact and / or touching 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 touching 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 touching contact with an outer side of the recess. In particular, all sides of the mattress insert element that are opposite the mattress frame element can be in touching 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 accommodated in the recess in a slip-proof manner.

[0051] In this case, the term "flush" can mean that a surface (top surface or at least one side surface) of the at least one mattress insert element and the at least one mattress frame element form a common plane, in particular without any 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 top surface of the at least one mattress insert element and the top surface of the at least one mattress frame element form a common plane.

[0052] In a further embodiment, the at least one mattress insert element is received 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. 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 designate the part of the mattress frame element that at least partially surrounds the recess and / or the mattress insert element along an outer circumference.

[0053] 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.

[0054] 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.

[0055] In a further embodiment of the mattress core according to the invention, the at least one mattress insert element is received in the at least one recess such that it is in touching contact with the at least one mattress frame element on all outer sides except for an outer side of the at least one mattress insert element provided as a lying surface for the user. In a further embodiment of the mattress core according to the invention, the at least one mattress insert element is received in the at least one recess in a slip-proof manner. A slip-proof reception 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 significant movement during sleep by the user, thus enabling an ergonomic lying position and providing a comfortable lying surface for the user.

[0056] In a further embodiment, the at least one mattress insert element has a compression hardness of approximately 2 kPa to approximately 8 kPa, for example approximately 2 kPa to approximately 4 kPa, in particular approximately 2.5 kPa to approximately 3.5 kPa, furthermore in particular approximately 3.2 kPa. Alternatively or additionally, the at least one mattress frame element has a compression hardness of approximately 2 kPa to approximately 8 kPa, for example approximately 2 kPa to approximately 4 kPa, in particular approximately 2.5 kPa to approximately 3.5 kPa, furthermore in particular approximately 3.2 kPa. Such compression hardnesses of the mattress insert element and / or mattress frame element can enable a user to lie comfortably. In particular when used for a child's mattress, but not limited thereto, such compression hardnesses can also prevent the head from tilting, so that neck injuries can be effectively avoided.

[0057] 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 can contain and / or be made from a hydrophobic, washable, and / or boilable foam. 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 undergoing plastic deformation or significantly altering 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 undergoing plastic deformation or significantly altering its compression properties.Washing and / or boiling at such elevated temperatures can also result in disinfection, which can further increase the hygiene of the mattress core.

[0058] By constructing the mattress core from hydrophobic foam, dirt and grime can be easily removed. Furthermore, drying time after washing can be reduced or eliminated entirely.

[0059] The term "foam" is to be understood broadly here and includes all foams that can be used for mattress cores. The foam can be, but is not limited to, cold foam, particularly polyurethane foam.

[0060] For example, the at least one mattress insert element and / or the at least one mattress frame element can comprise an open-pore foam. This can, in particular, increase breathability and improve the sleeping environment.

[0061] 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 offer excellent ventilation in an upholstered area. Example foams are PUR foams, i.e. polyurethane foam or polyester foams. Open-cell foam can therefore 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-cell foam, for example, has a pore size of around 100 to 200 micrometers or more. The use of an open-cell foam can lead to improved ventilation of the mattress core overall. Furthermore, it can ensure that a user is supplied with sufficient oxygen, especially when lying / sleeping on their stomach.This can ensure adequate oxygen supply, especially for children or infants.

[0062] In a further embodiment, the at least one mattress frame element and the at least one mattress insert element have a plurality of air channels. The plurality of air channels can ensure, in particular, a sufficient supply of oxygen to the user. Breathability can also be increased. Furthermore, dirt and contaminants can be removed via the air channels. Drying time can also be reduced due to the improved ventilation via the air channels.

[0063] The term air channel is to be understood broadly here and includes all devices, openings, holes, passages and channels 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 can have a larger cross-section than a pore of a material of the mattress core. The plurality of air channels can have a rectangular, square, triangular, polygonal, circular, and oval cross-section and each extend in a longitudinal direction through at least a part 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 some of the air channels can have a converging or diverging shape, e.g.a conical shape whose radius continuously decreases or increases from a top or bottom side of the at least one mattress insert element and / or the at least one mattress frame element. The air channels can 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 can 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 perpendicularly or in a vertical direction, inclined to the vertical direction and / or in a step-like 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 a portion 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 extension direction of the air channels can comprise that the air channels extend from the top side of the at least one mattress insert element and / or the at least one mattress frame element in the vertical direction. In other words, the vertical extension direction can comprise only a vertical component. An inclined extension can mean, for example, that a longitudinal direction of the air channels can be inclined by an inclination angle α of approximately 5° to 90°, for example approximately 10° to 45°, relative to the vertical. In other words, the inclined extension direction can comprise at least one vertical and at least one horizontal component. A step-shaped extension can further comprise that the plurality of air channels has both at least one vertical region, ie a region which extends perpendicular to the top side and / or bottom side of the at least one

[0066] Mattress insert element and / or at least one mattress frame element, as well as at least one horizontal region, ie a region that extends parallel to the top and / or bottom of the at least one mattress insert element and / or at least one mattress frame element. In other words, each air duct can have a plurality of horizontal and vertical regions. Alternatively or additionally, the regions of the stepped extension of the plurality of air ducts can also be inclined at an angle of inclination.

[0067] 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 across 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, toward a center or middle of the mattress core. In particular, as the cross-section increases, a sufficient oxygen supply to the user via the air channels can be ensured.

[0068] The 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 thereto. The plurality of air channels can be arranged on the entire top and / or bottom 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 can be arranged only in a central section of the at least one mattress insert element and / or mattress frame element and not in the head section and / or foot section. Alternatively or additionally, the plurality of air channels can also be arranged in a head section and / or foot section.

[0069] For example, the plurality of air ducts in the head section and / or

[0070] Foot section 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, the plurality of air channels in the head section and / or foot section can also differ completely from the plurality of air channels in the middle section of the at least one mattress insert element. Examples of deviations can be the shape, the row arrangement, the radius, or the number of air channels per row.

[0071] Furthermore, the air channels can be arranged on the entire top and / or bottom of the at least one mattress frame element, or only in the exposed surface or outer side of the recess of the at least one mattress frame element. It should be noted here that the surface / top / outer side of the at least one mattress frame element exposed by the recess can also be interpreted / conceived as the top or part of the outer side of the at least one mattress frame element, as previously used. For example, air channels can be provided in the mattress frame element only in the recess.

[0072] Alternatively or additionally, no air channels may be provided on the side areas and / or the end areas of the mattress frame element, which may, for example, surround the recess and / or the mattress insert element.

[0073] The air channels can be distributed in any arrangement across the sleeping surface or part of it. In particular, the air channels can be arranged in several rows, with each row containing several air channels arranged one behind the other in the transverse direction of the mattress core, and several rows arranged parallel to each other in the longitudinal direction. Therefore, several rows of air channels can extend parallel to the end faces of the mattress core and parallel to each other. Alternatively, the rows can be tilted relative to each other.

[0074] Each row of air channels can comprise an identical or different number of air channels. For example, each row can have approximately 5 to approximately 25, or approximately 10, air channels, with approximately 5 to 30, or approximately 20, rows spaced apart from each other in the longitudinal direction of the mattress core.

[0075] The air channels of the at least one mattress insert element and / or at least one mattress frame element can be arranged such 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 can 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 the at least one mattress insert element can form a common channel in pairs.

[0076] The air ducts 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 extension directions. Curved and / or bent configurations are also conceivable.

[0077] The air channels can improve ventilation of the mattress core. Furthermore, they can ensure that users are supplied with sufficient oxygen, especially when lying or sleeping on their stomach.

[0078] 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 one another. An arrangement in rows and parallel to one another can enable improved ventilation of the mattress core and ensure that the user is supplied with sufficient oxygen, particularly when lying / sleeping on their stomach. Fluid drainage can also be improved, and drying time can be reduced.

[0079] 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.

[0080] In a further embodiment, the plurality of air channels of the at least one mattress frame element and of the at least one mattress insert element each have a radius of approximately 0.1 cm to approximately 5 cm, in particular of approximately 0.2 cm to approximately 3 cm, for example of approximately 0.5 cm to 1.5 cm.

[0081] In a further embodiment, the at least one mattress insert element has a head section, a foot section, and a middle section, with the plurality of air channels being arranged only in the middle section. The head and foot sections can each be arranged on the end faces of the mattress core.

[0082] The head section can be designed to serve as a lying surface or support surface for a user's head. The head section can be identical to or different from the foot section. The head section and / or the foot section can have an area that is approximately 10 to 40%, in particular 12.5%, of the total area of ​​the at least one mattress insert element.

[0083] The term "midsection" can encompass all areas of a mattress or mattress core located longitudinally between the head section and the foot section. The midsection can directly border the head section and / or foot section. The midsection can serve as a lying surface or support surface for a user's hips or stomach.

[0084] Another aspect of the present disclosure relates to the use of a mattress insert, as described above and below, for a mattress core of a mattress and / or a child's mattress. Another aspect of the present disclosure relates to the use of a mattress core, as described above and below, for a mattress and / or a child's mattress.

[0085] 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.

[0086] The term "cover" is to be understood broadly here and encompasses all devices that completely or at least partially enclose a mattress core. The cover can be designed as a mattress cover or mattress protector, or refer to such a cover. The terms "cover," "mattress protector," and "mattress cover" can be used synonymously below. The cover can have a top side, a bottom side, and / or at least one side surface. The top side and / or bottom side of the cover can each be dimensioned as a sleeping surface for a user.

[0087] In addition or alternatively to the cover, the mattress core can have a stocking. The stocking can be designed as a tight-fitting, fitting, and / or in contact with an outer surface of the mattress core, the mattress insert element, and / or the mattress frame element covering the at least one mattress frame element and the at least one mattress insert 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 knits or special woven weaves with ribs, so-called tricot weaves. The stocking can, for example, be designed with stretchable stitches and / or in a grid or net structure.Alternatively, the stocking can be made of an elastic and stretchable mesh fabric, with this fabric having square and / or rectangular meshes. However, other shaped cutouts are conceivable. Furthermore, the fabric can be made of natural 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 can be removed.

[0088] In a further embodiment, the cover comprises a cover material 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 material is formed from a spacer knit, for example a 3D spacer knit, and wherein a plurality of cover material recesses are formed at least on an outer side of the upper layer facing away from the lower layer.

[0089] The cover material can be made and / or formed entirely from a spacer knit and / or 3D spacer knit. In a two-layer design of the cover material, the cover material has an upper layer and a lower layer, wherein the upper and lower layers can be fully or at least partially connected and / or knitted with threads from the upper and / or lower layers, for example at specific points. Alternatively or additionally, connecting threads can be used which can connect the upper and lower layers. In a three- or multi-layer design of the cover material, the cover material can have, in addition to the upper layer and the lower layer, one or more middle layers of the cover material, which can be connected and / or knitted with the upper and / or lower layer.Alternatively or additionally, connecting threads can also be used here, which can connect at least two layers of the cover material, such as the upper layer, the lower layer and / or one or more middle layers.

[0090] The cover or cover material can be produced easily, for example, on a large circular knitting machine operating according to the so-called 3-way technique with high throughput and thus high cost-effectiveness. Cover material cutouts formed at least on the outer side of the upper layer of the cover material are to be strictly distinguished in the context of the present disclosure from stitches from which the cover material, the lower layer, and / or the upper layer may be formed. Compared to the stitches, the cover material cutouts can be larger; for example, the cover material cutouts or cutouts of the cover can have a cross-sectional area that can be many times larger (approximately 5 to 100 times or more) than an average cross-sectional area of ​​the stitches of the cover material.

[0091] The term "spacer knit" is to be understood broadly here and encompasses a knit that differs in several respects from spacer fabrics regularly used for covers. For example, spacer fabrics are regularly produced on so-called warp knitting machines, whereas a spacer knit is usually produced on a knitting machine. In the production of a spacer fabric, stitches are arranged around a warp (hence the term "warp knitting machine"). The stitches are strung together vertically. Due to this arrangement of the stitches around a warp, the spacer fabric is stable, rigid, inelastic, and non-stretchable. In contrast, the stitches of a spacer knit are not arranged around a warp; rather, the stitches themselves can be elastic and stretchable, both horizontally and vertically.Compared to a spacer fabric, a spacer knit can be particularly distinguished by being elastic and stretchable in both horizontal and vertical directions, whereas a spacer knit, in comparison, is completely inelastic and non-stretchable. Spacer knits are therefore static and rigid fabric structures that exhibit little to no elasticity. Furthermore, a spacer knit has a rigid, hard, and plastic-like feel, whereas a spacer knit can have a textile or fabric-like and soft feel. Furthermore, in a spacer knit, fiber ends regularly protrude from the surface of the knit, creating a scratchy and rough feel.In contrast, a spacer fabric generally has a much softer feel, which is sometimes caused by the increased elastic properties of the spacer fabric and a much finer processing compared to spacer knits.

[0092] According to one embodiment, the cover and / or a cover fabric of the mattress cover is at least partially formed from a spacer fabric, in particular a spacer knit and / or a spacer warp-knitted fabric. Such spacer fabrics can advantageously facilitate air and moisture exchange.

[0093] According to one embodiment, the cover comprises a cover material 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 material is formed from a spacer knit, for example a 3D spacer knit, and wherein a plurality of recesses are formed at least on an outer side of the upper layer facing away from the lower layer.

[0094] The lower layer can be essentially closed and / or knitted closed, and the cutouts can form perforations or openings in the upper layer. The cutouts can thus be delimited by the lower layer. Between the upper and lower layers, the cutouts can optionally be at least partially delimited by spacer threads. A contour of the cutouts on the upper layer can be defined by knitting stitches of the 3D spacer knit on the upper layer. The mattress cover thus utilizes the advantages of a spacer knit, which, for example, has a spacer structure with stitches, for example, at least partially made of knitted monofilament or multifilament spacer threads.

[0095] Furthermore, the cutouts on the outside allow for increased air circulation, increased breathability and / or increased moisture removal.

[0096] The cutouts can be designed to be open toward the outside, i.e., toward the user, and / or have an outwardly open cross-section. The cutouts can thus denote openings. The cutouts can be advantageous in terms of air exchange and moisture wicking, as well as generally compensating for temperature fluctuations. The cutouts can also provide increased elasticity, which offers a soft feel to the user and can also allow the cover to optimally adapt to the user or head lying on it, without being impaired by brittle spacer threads that are often noticeable in spacer fabrics.

[0097] The recesses formed at least on the outer side of the upper layer can further provide and / or form a mesh structure of the cover material. In other words, the cover material can have a mesh structure, such as a honeycomb mesh structure, with the recesses, at least on the outer side.

[0098] The cutouts in the mesh structure and / or the cover fabric can, for example, be arranged in a regular pattern on the outer side of the cover fabric. In other words, the cutouts can be arranged regularly and / or in a regular pattern. However, an irregular arrangement, for example, forming a pattern, is also conceivable.

[0099] The recesses, such as those open to the outside, can be variable in terms of their geometry, for example round, square, oval, polygonal, elliptical or any other shape in terms of their open cross-section.

[0100] For example, the recesses can be honeycomb-shaped. Alternatively or additionally, the recesses can have a round, rounded, angular, square, rectangular, polygonal, triangular, elliptical, oval, and / or polygonal cross-section.

[0101] According to one embodiment, the upper layer and / or the lower layer of the cover material is at least partially made of a natural fiber.

[0102] The use of natural fibers, which can be contained and / or knitted into the spacer fabric, 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. Furthermore, 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. Furthermore, natural fibers can enable cost-efficient production of the mattress cover.

[0103] According to one embodiment, the natural fiber of the cover or mattress cover or the associated cover material is an animal hair fiber, a wool fiber, a 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. Such natural fibers can be characterized, for example, by increased sustainability, odor neutrality, skin compatibility, durability, and / or robustness compared to synthetic fibers. According to one embodiment, the upper layer, the lower layer, and / or one or more middle layers of the cover material have a weight fraction of natural fibers, based on the respective layer or the entire cover material, 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% of natural fibers is also conceivable.

[0104] According to one embodiment, the proportion, for example the weight proportion and / or volume proportion, of natural fibers, for example based on the respective layer or the entire cover material, in the upper layer is greater than the proportion, for example the weight proportion and / or volume proportion, 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.

[0105] According to one embodiment, the upper layer consists essentially and / or almost entirely, for example entirely, of natural fibers and the lower layer, as well as optionally one or more middle layers, consist essentially and / or almost entirely, for example entirely, of synthetic fibers.

[0106] According to one embodiment, the upper layer and / or the lower layer of the cover fabric is at least partially formed from textured, twisted yarn, in particular multifilament yarn, for example, from polyester yarn, polyethylene yarn, polyamide yarn, polyethylene yarn, and / or polyamide yarn. This can provide a soft and pleasant feel.

[0107] According to one embodiment, the upper layer and / or the lower layer of the cover material is at least partially formed from monofilament yarn, in particular polyester yarn, smooth polyester yarn, polyethylene yarn, smooth polyethylene yarn, polyamide yarn, and / or smooth polyamide yarn. Forming the cover material from monofilament yarn on the underside of the cover material facing the mattress core or the pillow core can facilitate the removal or insertion of the mattress or pillow core.

[0108] For example, the cover fabric made of spacer knit can be formed 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, polyethylene fiber and / or polyamide fiber.

[0109] The inner or lower layer can, for example, be a smooth fabric layer, which can also be jacquarded and / or, for example, provided with a pattern, onto which the upper layer of the spacer fabric made of textured, twisted yarn, in particular multifilament yarn, can be built up towards the outside.

[0110] According to one embodiment, the cover material further comprises a middle layer, which is at least partially and / or at least partially knitted with the upper layer and / or the lower layer. The middle layer can serve to add volume to the cover material. This can also increase sleeping comfort.

[0111] According to one embodiment, the middle layer is at least partially formed from a monofilament yarn, in particular polyester yarn, smooth polyester yarn, polyethylene yarn, smooth polyethylene yarn, polyamide yarn, and / or smooth polyamide yarn.

[0112] According to one embodiment, the middle layer is at least partially formed from a multifilament yarn, for example a textured, twisted multifilament yarn, for example from polyester yarn, polyethylene yarn, polyamide yarn, polyethylene yarn and / or polyamide yarn.

[0113] According to one embodiment, the middle layer is formed at least partially from a natural fiber. This offers the advantages explained above with regard to natural fibers.

[0114] According to one embodiment, the recesses extend at least substantially across a thickness of the upper layer and, optionally, 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.

[0115] The cutouts can, for example, extend at least substantially across 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 optimal climate control with regard to air and moisture exchange between the two sides of the cover fabric. Furthermore, the depth of the cutout can increase the softness of the upper layer of spacer knit, thus resulting in an improved feel.

[0116] The cover fabric can also be constructed in three layers, with a middle layer, for example, one knitted with the upper layer, containing a monofilament yarn as a filler. This can achieve stabilization and a tactile voluminization of the spacer fabric, which is often desired, while simultaneously maintaining high air and moisture permeability. The monofilament yarn can, for example, be made at least partially of polyester, polyamide, and / or polyethylene, although other synthetic fibers can also be used.

[0117] In order to give the outward-facing surface or outer side of the spacer knit a particularly smooth and pleasant feel, the surface or outer side surrounding the recesses can be formed from finer knitting stitches compared to other areas of the outer side.

[0118] According to one embodiment, the upper layer has a weight proportion of 50% to 70%, in particular 55% to 60%, of the cover material. Studies have shown that this weight proportion is particularly advantageous in terms of comfort and microclimatization. According to one embodiment, the lower layer has a weight proportion of 20% to 30%, in particular 25% to 30%, of the cover material.

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

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

[0121] According to one embodiment, the cover material has a weight of 250 g / m 2 - 300 g / m 2This allows the upholstery fabric to offer the required durability while remaining lightweight and easy to handle during production and use.

[0122] According to one embodiment, the cover material is rubberized, coated and / or provided with latex on at least one side, for example the outside, the inside, the underside and / or the top, for example to prevent the penetration of moisture and / or water.

[0123] According to one embodiment, the cover fabric is designed the same on all sides. In other words, the mattress cover can be designed the same on all sides—that is, on the top side, on the bottom side, and on any longitudinal and transverse sides. However, it is also conceivable to design different sides of the cover differently.

[0124] The identical design of all sides can enable particularly simple production, and due to the high breathability of the cover material, a ventilation strip on the transverse and longitudinal sides, which is often found in conventional covers, especially mattress covers, can be omitted. According to one embodiment, the mattress, the mattress cover, or the cover has an at least partially circumferential closure, in particular a zipper, which can be opened or closed to insert or remove a mattress core.

[0125] Furthermore, handles can be sewn onto the mattress cover to make it easier to handle a mattress covered with the mattress cover and / or the reclining furniture.

[0126] The cover or mattress cover may 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.

[0127] Another aspect of the disclosure relates to the use of a mattress core as described above and below for a mattress, a piece of furniture and / or a child's mattress.

[0128] Another aspect of the disclosure relates to the use of a mattress as described above and below as a child's mattress.

[0129] Further features, advantages and possible applications of the invention will become apparent from the following description of the embodiments and figures.

[0130] Short description of the characters

[0131] The figures are merely schematic and not to scale. Where the same reference symbols are used in different figures in the following description, they indicate identical, equivalent, similar, or similarly acting elements. They show:

[0132] Figure 1 is a schematic plan view of an embodiment of a mattress core according to the invention; Figure 2 is a perspective view of an embodiment of a mattress core according to the invention;

[0133] Figure 3 is a perspective view of an embodiment of a mattress core according to the invention with the mattress insert element removed;

[0134] Figure 4 is a schematic sectional view of an embodiment of a mattress core according to the invention;

[0135] Figure 5 is a schematic representation of a first embodiment of an air duct;

[0136] Figure 6 is a schematic representation of a second embodiment of an air duct;

[0137] Figure 7 is a schematic view of a mattress with a cover;

[0138] Figure 8 is a perspective view of a mattress with a cover fitted over a mattress core;

[0139] Figure 9 is a highly simplified partial plan view of an outer side of the cover;

[0140] Figure 10 is a schematic cross-sectional view through a cover material of the cover; and

[0141] Figure 11 is a detailed view of a cover closure.

[0142] Detailed description of embodiments Figure 1 shows a schematic plan view of an embodiment of a mattress core according to the invention.

[0143] 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 area and / or a cuboid shape. The mattress insert element 12 is arranged in the recess 30 of the mattress frame element 11 such that the mattress insert element 12, with its underside and the four side surfaces, is in direct contact or touching contact 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 l measured in the longitudinal direction 7 and a width b measured 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 measured in the longitudinal direction 7 and a width B measured in the transverse direction.

[0144] The width / length ratio B / L of the mattress frame element 11 can be approximately 50%. The width / length ratio b / l of the mattress insert element 12 can be approximately 40%. The width / length ratio b / B is approximately 70%, and the length / length ratio l / L is approximately 85%.

[0145] 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 one another. The mattress insert element 12 has 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 and 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 area of ​​the mattress insert element.

[0146] The mattress frame element 11 forms a step edge which completely surrounds the recess 30 and / or the mattress insert element 12 arranged therein.

[0147] Figure 2 shows a perspective view of an embodiment of a mattress core 10 according to the invention. Unless otherwise described, the mattress core 10 of Figure 2 has the same elements and features as the mattress core 10 of Figure 1.

[0148] The mattress insert element 12 is arranged flush in the recess 30 of the mattress frame element 11, as shown in Figure 2. "Flush" means that both the upper side of the mattress frame element 11 and the upper side of the mattress insert element 12 form a common plane, which also provides the lying surface of the mattress core. This common plane has no sharp transitions, i.e., elevations or edges, between the mattress insert element 12 and the mattress frame element 11.

[0149] Figure 3 shows a perspective view of an embodiment of a mattress core 10 according to the invention with the mattress insert element removed. Unless otherwise described, the mattress core 10 of Figure 3 has the same elements and features as the mattress core 10 of Figures 1 and 2.

[0150] 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 outer side of the mattress core or the lying surface into the interior of the mattress frame element 11.

[0151] The mattress insert element 12 has a height h, which can 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.

[0152] The recess 30 and the mattress insert element can have corresponding shapes and geometries such that the mattress insert element 12 can be securely received in the recess 30. In particular, the recess 30 and the mattress insert element 12 can have complementary geometries.

[0153] Figure 4 shows a schematic sectional view of an embodiment of a mattress core according to the invention. Unless otherwise described, the mattress core 10 of Figure 4 has the same elements and features as the mattress core 10 of Figures 1 to 3.

[0154] 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 the vertical direction, in particular orthogonal to the longitudinal direction 7 and the transverse direction 5 of the mattress core 10. The air channels 13 of the mattress insert element 12 and the air channels 13 of the mattress frame element 11 form a common channel in pairs. The air openings or channels 13 all have a constant radius over their length.

[0155] As can be seen in Figures 1 to 4, the air ducts 13 can have a round cross-section and run parallel to the vertical direction. However, the air ducts 13 can also be inclined to the vertical and / or have a different cross-section, as described in detail above.

[0156] Figure 5 shows a schematic cross-sectional view of a first embodiment of an air duct 13 of a mattress core 10. Unless otherwise described, the mattress core 10 of Figure 5 has the same elements and features as the mattress core 10 of Figures 1 to 4.

[0157] The air duct 13 is an inclined air duct in the at least one mattress insert element 12 and / or mattress frame element 11, which is inclined at the angle of inclination a. The angle of inclination a is 45°.

[0158] Figure 6 shows a schematic cross-sectional view of a second embodiment of an air duct 13 of a mattress core 10. Unless otherwise described, the mattress core 10 of Figure 6 has the same elements and features as the mattress core 10 of Figures 1 to 5.

[0159] The air duct 13 is a stepped air duct in the at least one mattress element 12 and / or mattress frame element 11. The stepped air duct 13 has a vertical section 610 and a horizontal section 610. The vertical section 610 extends vertically perpendicular to the top and bottom of the mattress insert element 12 and / or mattress frame element 11. The horizontal section extends horizontally or parallel to the top and bottom of the mattress insert element 12 and / or mattress frame element 11.

[0160] Figure 7 shows a schematic view of a mattress 500. The mattress has a mattress core 10, such as a mattress core 10 of Figures 1 to 6.

[0161] Furthermore, the mattress 500 has a cover 61 which completely surrounds the mattress core 10.

[0162] The cover 61 is closed by means of a fully circumferential fastener 62, in particular a zipper, which is secured against accidental opening. The fully circumferential fastener 62 is arranged on the underside of the mattress core or the cover 61.

[0163] Figure 8 shows a perspective view of a mattress 500 with a cover 61 pulled over a mattress core 10.

[0164] The cover 61 or a mattress cover 61 (or a mattress protector 61) shown as an example 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.

[0165] The cover 61 is formed all the way around from the same cover material 70, with lateral transverse surfaces 73 and longitudinal surfaces 74 also merging, optionally seamlessly, into the top side 71 and bottom side 72. However, in other designs, the surfaces of the cover material 70 can also be separated by seams and, if necessary, a piping tape.

[0166] A circumferential closure 62 in the form of a zipper is sewn into the mattress cover 61 (or mattress protector 61) on the transverse surfaces 73 and longitudinal sides 74 for inserting and removing the mattress core 10. In addition, several handles 75 are provided on the lateral longitudinal surfaces 74 for lifting the mattress core 10 spanned by the mattress cover 61 (or mattress protector 61), of which only one handle 75 is shown as an example.

[0167] As can be seen in a section X in Figure 8, which represents the entire surface of the mattress cover 61 (or mattress protector 61), and in Figures 9 and 10, the cover material 70 is formed with a spacer knit 76, for example a 3D spacer knit, up to its outer side 77.

[0168] The cover fabric 70 has a honeycomb-like mesh structure with outwardly open recesses 78 arranged in a regular, finely structured pattern. The recesses 78 preferably have a round, rounded, elliptical, and / or oval cross-section, which, in the unstretched state, can be, for example, 2 mm to 4 mm in width and approximately 3 mm to 5 mm in length.

[0169] The material webs 81 made of spacer fabric 76 located between the offset and regularly arranged recesses 78 can be dimensioned at least approximately the same in width.

[0170] The cover material 70 of the cover 61 is in the present case a three-layer spacer knit with an upper layer 91 forming the outer side 77, a middle layer 92 forming the spacer knit 76 and 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.

[0171] The upper layer 91 can comprise a monofilament yarn, such as a smooth monofilament yarn, or a multifilament yarn, such as a textured, twisted multifilament yarn. Similarly, the lower layer 93 can also comprise a monofilament yarn, such as a smooth monofilament yarn, or a multifilament yarn, such as a textured, twisted multifilament yarn. Likewise, the middle layer 92 can be formed at least partially from monofilament yarns or multifilament yarns. One or more of the upper layer 91, the middle layer 92, and the lower layer 93 further contain natural fibers and / or are formed at least partially from natural fibers, as described above. The natural fibers can 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 fibers, such natural fibers can be characterized by increased sustainability, odor neutrality, skin compatibility, durability and / or robustness.

[0172] The upper layer 91 further has a fine-knit structure 94 on the outer side 77, which gives the surface a soft feel.

[0173] 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 material 70 in order to utilize the microclimatic advantages of the spacer knit 76 to the greatest extent possible.

[0174] To enable maximum air circulation and optimal moisture removal to the outer side 77, the honeycomb-like recesses 78 extend essentially across the thickness of the upper layer 91 and the middle layer 92, bordering the lower layer 93, so that the cover material simultaneously exhibits high flexibility and extensibility across its width thanks to the recesses 78. The elasticity in height creates a softness that can be defined by the filler of the middle layer 91, depending on the desired degree of softness.

[0175] 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. Figure 11 shows a detailed view of a cover closure.

[0176] Closure 62 is a closure secured against accidental opening. This closure is distinguished by the fact that it is a zipper whose slider 121 has no zipper or puller.

[0177] In addition, it is noted that the terms "comprising" and "having" do not exclude other elements or steps, and the indefinite articles "a" or "an" do not exclude a plurality. Furthermore, it is noted that features or steps described with reference to one of the above embodiments may also be used in combination with other

[0178] features or steps of other embodiments described above.

Claims

A mattress core (10) for a piece of reclining furniture, in particular for a children's mattress, the mattress core (10) comprising: at least one mattress frame element (11); and at least one mattress insert element (12); wherein the at least one mattress frame element (11) has at least one recess (30) on at least a partial region of an outer surface of the mattress core (10) designed as a lying surface for a user; and wherein the at least one mattress insert element (12) is arranged at least partially and removably in the at least one recess (30) of the at least one mattress frame element (11). The mattress core (10) according to claim 1, wherein the at least one recess (30) is designed to correspond to a geometry of the at least one mattress insert element (12) such that the at least one mattress insert element (12) is at least partially, in particular substantially completely, received in the at least one recess (30).Mattress core (10) according to one of the preceding claims, wherein the at least one mattress insert element (12) can be inserted into and / or removed from the at least one recess (30) of the at least one mattress frame element (11) via the outer surface of the mattress core (10) designed as a lying surface for the user. Mattress core (10) according to one of the preceding claims, wherein the at least one recess (30) is designed such that the at least one mattress frame element (11) surrounds and / or encloses the mattress insert element (12) at least along part of an outer circumference, in particular over its entire circumference.

5. Mattress core (10) according to one of the preceding claims, wherein the at least one mattress insert element (12) can be accommodated tightly and / or flush in the at least one recess (30).

6. Mattress core (10) according to one of the preceding claims, wherein the at least one mattress insert element (12) can be received and / or arranged in the at least one recess (30) in such a way that an outer side of the at least one mattress insert element (12) is flush with an outer side of the at least one mattress frame element (11).

7. Mattress core (10) according to one of the preceding claims, wherein an outer side of the at least one mattress insert element (12) and an outer side of the at least one mattress frame element (11) together form the lying surface for the user.

8. Mattress core (10) according to one of the preceding claims, wherein the at least one mattress insert element (12) is received in the at least one recess (30) in such a way that it is in touching contact with the at least one mattress frame element (11) on all outer sides except for an outer side of the at least one mattress insert element (12) provided as part of a lying surface for the user.

9. Mattress core (10) according to one of the preceding claims, wherein the at least one mattress insert element (12) is received in the at least one recess (30) in a slip-proof manner.

10. Mattress core (10) according to one of the preceding claims, wherein the at least one mattress insert element (12) has a compression hardness of approximately 2 kPa to 8 kPa, in particular of approximately 2.5 kPa to 3.5 kPa. Mattress core (10) according to one of the preceding claims, wherein the at least one mattress insert element (12) comprises a hydrophobic, washable, and / or boilable foam. Mattress core (10) according to one of the preceding claims, wherein the at least one mattress insert element (12) and / or the at least one mattress frame element (11) comprises an open-pore foam. Mattress core (10) according to one of the preceding claims, wherein the at least one mattress frame element (11) and / or the at least one mattress insert element (12) comprises a plurality of air channels (13). Mattress core (10) according to claim 13, wherein the plurality of air channels (13) of the at least one mattress frame element (11) and / or the at least one mattress insert element (12) are arranged in several rows, in particular parallel to one another.Mattress core (10) according to one of claims 13 or 14, wherein the plurality of air channels (13) of the at least one mattress frame element (11) and the at least one mattress insert element are arranged such that they form a common channel in pairs. Mattress core (10) according to one of claims 13 to 15, wherein the air channels (13) of the at least one mattress frame element (11) and the at least one mattress insert element (12) each extend completely through the at least. - M - a mattress frame element (11) and / or the at least one mattress insert element (12). Mattress core (10) according to one of claims 13 to 16, wherein the plurality of air channels (13) of the at least one mattress frame element (11) and / or the at least one mattress insert element (12) each have a radius of approximately 0.1 cm to approximately 5 cm, in particular of approximately 0.2 cm to approximately 3 cm, for example of approximately 0.5 cm to 1.5 cm. Mattress core (10) according to one of claims 13 to 17, wherein the at least one mattress insert element (12) has a head section (14), a foot section (15), and a middle section (16), wherein the plurality of air channels (13) are arranged only in the middle section (16).Mattress (100), in particular a children's mattress (100), comprising: a mattress core (10) according to one of the preceding claims, and a cover (61); wherein the cover (61) completely surrounds the at least one mattress frame element (11) and the at least one mattress insert element (12). Mattress (100) according to claim 19, wherein the cover (61) comprises a cover material (70) with at least an upper layer (91) and a lower layer (93), wherein the upper layer (91) and the lower layer (93) are arranged at least partially one above the other; wherein at least the upper layer (91) of the cover material (70) is formed from a spacer knit, for example a 3D spacer knit. and wherein a plurality of cover material recesses (78) are formed at least on an outer side (77) of the upper layer (91) facing away from the lower layer (93).

21. Mattress (100) according to one of claims 19 and 20, wherein the cover (61) has a closure (62) secured against unintentional opening.

22. Use of a mattress core according to one of claims 1 to 18 for a mattress, in particular a children's mattress.

23. Use of a mattress according to one of claims 19 to 21 as a child's mattress.

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