Drawer bottom for drawers

Abstract

A drawer bottom (1) for a drawer (2), the drawer bottom (1) having at least one spacer (33), which is arranged on the drawer bottom (1), preferably via at least one fastening means (34), in such a way that a first thickness (5) of the drawer bottom (1) in the vertical direction (6) in the use state (7) of the drawer bottom (1), passing through the at least one spacer (33) in the region of at least two, in particular three or four, side surfaces (4) of the drawer bottom (1), is greater than a second thickness (8) of the drawer bottom (1) in the vertical direction (6) in the use state (7) of the drawer bottom (1) in a middle region, preferably in the region of a central point (9) of the drawer bottom (1), the second thickness (8) being less than 16 mm, preferably less than 12 mm, particularly preferably less than 8 mm.

Description

[Technical Field]

[0001] The present invention relates to a drawer bottom for a drawer. Furthermore, the invention relates to an assembly consisting of such a drawer bottom and two drawer side walls for a drawer, each having a mounting device for connecting the drawer bottom to the drawer side wall. Furthermore, the invention relates to a drawer comprising such an assembly, and to a method for manufacturing such a drawer bottom, as well as a method for assembling such an assembly.

[0002] Typically in the furniture sector, on the one hand, the drawer bottom must be specified according to the required profile—in particular the load-bearing capacity for a given material selection—and on the other hand, the drawer sidewalls must be specified according to the dimensions of the drawer bottom—in particular with regard to the accommodation for the drawer bottom, which requires an undesirably large variety of styles, both in terms of different drawer bottoms and different drawer sidewalls.

[0003] A drawer bottom that differs from conventional drawer bottoms in the furniture sector is already known from document WO 2012 / 122575, in which the drawer bottom has lower and upper bottom plates in the side area that reduce the thickness of the drawer bottom in order to rest on the webs of the drawer side walls.

[0004] The disadvantage of this prior art technique is that the resource costs - both in terms of the required production lines and the material demands - are very high.

[0005] EP 2597997 A1 discloses a drawer sidewall different from conventional drawer sidewalls in the furniture industry, in which a mounting device for the drawer bottom is provided with a tongue connected to the cross plate via a web, thereby allowing for a thinner drawer bottom thickness to be compensated for variations. However, for a given drawer bottom, the tongue dimensions must be specifically adapted to the thickness of the drawer bottom, which does not reduce the variety of styles, and the tongue dimensioning is limited by the sheet metal thickness of the drawer sidewall. Furthermore, the tongue must be adapted to the thickness of the drawer bottom in an additional manufacturing process step, which may not even be known at the time of manufacturing the drawer sidewall, making it particularly difficult to ensure flexible retrofitting. Furthermore, the tongue dimensions must be precisely adapted to the thickness of the drawer bottom, which can result in insufficient play compensation or the risk of undesired deformation during the tightening process, which could make removal difficult or prevent the drawer bottom from being reusable.

[0006] The technical problem addressed by the present invention is therefore to provide an improved drawer bottom, as well as an assembly, drawer, and method for manufacturing or assembling, compared to the prior art, in which the disadvantages of the prior art are at least partially overcome and which are particularly distinguished by a reduction in the required resources and the required variety of forms.

[0007] This problem is solved by the features of claim 1.

[0008] Therefore, according to the invention, the drawer bottom has at least one spacer, which is arranged on the drawer bottom, preferably via at least one fixing means, in such a way that a first thickness of the drawer bottom in the vertical direction in the used state of the drawer bottom, which passes through at least one spacer in the region of at least two, in particular three or four, sides of the drawer bottom, is greater than a second thickness of the drawer bottom in the vertical direction in the used state of the drawer bottom in a middle region of the drawer bottom, preferably in the region of the center point, and it is specified that the second thickness is less than 16 mm, preferably less than 12 mm, particularly preferably less than 8 mm.

[0009] This allows, for the first time, the drawer bottom, in the region of its side provided for connection to the drawer side wall, to be adjustable via at least one spacer to match the existing type of dimensioning with the inherent internal spacing of the mounting device. This allows, for example, existing drawer side walls to be retrofitted to the drawer bottom, with only a small amount of material required during production. The provision of a base allows the drawer bottom to be adapted to any drawer side wall in a continuous manner by gradually increasing its thickness, and this can be flexibly adjusted via the variable spacer; the conventional—possibly oversized—16 mm material thickness can be optimized as a secondary thickness accordingly to the required situation.

[0010] For example, to assemble the drawer bottom on-site, the drawer bottom can be delivered as a set consisting of a plate-like material or a previous drawer bottom and at least one spacer. The at least one spacer can have a dual function, for example, protecting the corners of the plate-like material of the drawer bottom in the transport position. The conventional first and second thicknesses of 16 mm can be used variably where the drawer bottom must withstand high loads, and a thinner second thickness can be used under other requirements—without the need to prepare or replace new drawer side walls. Drawer bottoms are particularly suitable for drawer-like containers with at least one side wall, back wall, and / or front wall.

[0011] Although the at least one spacer is certainly a component of the drawer bottom to be arranged on the drawer side wall, the at least one spacer does not necessarily have to be connected to the plate-like material of the drawer bottom by a fastening means, and this does not necessarily require an irreleasable connection or a connection that must be released using a tool. For example, the at least one spacer, preferably as a clamping means, can be placed on the plate-like material of the drawer bottom during the drawer assembly process, or vice versa. For example, the at least one spacer (or plate-like material) can be at least partially arranged in a mounting device on the drawer side wall, and then the plate-like material (or at least one spacer) can be at least partially arranged inside the mounting device below or above the at least one spacer.

[0012] Furthermore, a smaller amount of material can be used for the drawer bottom, which has the advantageous property of optimizing the second thickness in the area of ​​the center point. For example, the usual 16 mm second thickness for a drawer sidewall mounting device with an inner spacing of 16 mm can be reduced to the original 16 mm thickness simply by adding an 8 mm second thickness and a single fold as a spacer in the side area. Furthermore, an inner spacing of 24 mm can be achieved by additional (alternate) folds in the side area of ​​the drawer bottom. A 24 mm inner spacing can also be achieved by a single fold of the drawer bottom with a material thickness of 12 mm. This allows for cost and material savings.

[0013] On the other hand, a first thickness increase in the region of the sides can ensure a more stable or secure fastening on the drawer side wall. Generally, if the drawer bottom is not stiff enough or strong enough in the region of the center point, this can be compensated for (without adapting the connection point to the drawer side wall) for example via a decorative layer with different material characteristics or struts / reinforcements.

[0014] The second thickness can thus be individually tailored to the requirements of the drawer, while the first thickness can be variably adjusted by dimensioning the spacers or by multiple folding (typically several times the material thickness or more). For example, fastening means—especially in the side regions—can be provided by gluing (e.g., glue), screwing, or bayonet connections (e.g., dowels) of drawer bottom segments of any desired thickness, in which case the edge thickness of the drawer bottom can be increased in successive or continuous steps by means of material strips. The advantage here is that the first thickness is not limited to several times the second thickness, since the material strips can have a different material thickness from the (folded) drawer bottom.

[0015] Furthermore, the drawer bottoms can be stacked particularly efficiently for transport purposes, which reduces the transport weight and the required transport structure space due to the compact transport position in relation to conventional drawer bottoms. Furthermore, packaging and assembly are facilitated, whereby the drawer bottoms offer economical and environmental advantages on the one hand over solutions known from the prior art.

[0016] Furthermore, the style diversity can be advantageously reduced particularly with regard to the drawer sidewalls, for example only one style of drawer sidewall is required to cover various load ranges or drawer weight classes.

[0017] With regard to fastening, despite the small material thickness in the region of the central point, a sufficiently strong connection to the drawer side wall can be ensured. The type of attachment of the drawer bottom is generally arbitrary, for example, screw fastening, plastic deformation (e.g. burring joints, clinching, TOX joints or the like) etc. can be considered.

[0018] Preferably, the drawer bottom consists of a wooden material or wood, although generally other materials can also be used, such as plastic or similar materials. The drawer bottom may, but does not necessarily, have various covering or applied / bonded layers.

[0019] The side regions can be defined, for example, by material thickness, preferably substantially twice the material thickness. What is important is the relative difference in thickness between the edge or peripheral regions of the drawer bottom and the center when the drawer is installed in the drawer; in this case, the center point can be defined by the symmetrical point of the drawer bottom. Generally, it is sufficient for the middle region to be closer to the center of gravity of the drawer bottom than the peripheral regions, or for the side regions to be closer to the outer contour of the end face of the drawer bottom than the middle region. For stability reasons, a reinforcement or thickening may be provided at the center point; in this case, the first thickness can be defined as the material thickness of the drawer bottom in the region without or adjacent to the reinforcement or thickening.

[0020] As stated at the outset, patent protection is also sought for an assembly consisting of two drawer side walls, preferably U-shaped and / or metal cross plates for a drawer, each having one preferably U-shaped mounting device for connecting the drawer bottom to the drawer side wall, and such a drawer bottom, which is at least partially arranged inside the mounting device.

[0021] The mounting device can be constituted, for example, by the drawer side wall itself or a cross plate as the drawer side wall (for example by a profiled shape), or by furniture fittings arranged on (or at least partially integrated into) the drawer side wall.

[0022] A standard dimension for the vertical inner spacing of a mounting device is 16 mm for drawers. A second thickness of 8 mm with a first thickness of 16 mm provides sufficient stability. The drawer bottom according to the present invention allows a variety of drawer bottoms to be provided on conventional drawer sidewalls. Drawer bottoms with a second thickness of 13 mm are also possible, with the inner spacing substantially corresponding to the 13 mm of the drawer bottom. Preferably, the second thickness is at most 10 mm or 8 mm, and for use with such mounting devices, the spacers may be, for example, 3 mm or 5 mm. A second thickness of up to 5 mm is also possible. According to the present invention, for example, in addition to the advantage of retrofitting, the stability of a 13 mm drawer bottom can be increased by spacers for a 16 mm mounting device, and material can be saved by reducing the second thickness in a 16 mm mounting device. Particularly preferably, the second thickness is substantially 13 mm, substantially 10 mm, or substantially 5 mm.

[0023] As mentioned at the outset, patent protection is also sought for a method for producing such a drawer bottom, which method steps include providing a plate-shaped starting material and arranging at least one spacer in at least two side regions of the drawer bottom, so that the drawer bottom is thicker in at least two side regions than in a central region.

[0024] It is also conceivable to produce drawer bottoms in which the material thickness in the edge region is increased only on one side, for example, to make it possible to reduce the variety of types of drawer front or back walls. In general, the thickness increase in the peripheral regions of different sides may be different, for example, to make it possible to combine various types of drawer side walls, drawer front or back walls.

[0025] As mentioned at the outset, patent protection is provided for a method for assembling such an assembly, comprising the following method steps: - preparing a drawer bottom, preferably by the method described above for manufacturing a drawer bottom, - one mounting device is provided on each of the two drawer side walls, - positioning the drawer bottom at least partially inside the mounting device; Also required are methods for performing the method steps.

[0026] Advantageous embodiments of the invention are defined in the dependent claims.

[0027] Particularly preferably, at least one spacer is - made of wooden, plastic or metal materials; and / or - formed into strips, and / or - formed separately from the drawer bottom, and / or - has a substantially rectangular, U-, L-, T- or X-shaped configuration; and / or - have at least one bevel on the surface facing the drawer bottom or on the surface facing away from the drawer bottom; and / or - preferably with at least one reinforcing stay, and / or - Existing as an injection-molded part or machined; and / or - a third thickness, which is at least one-third, preferably at least half, particularly preferably at least the second thickness, of the material thickness of the second thickness; It has been identified that:

[0028] Preferably, the at least one spacer is present in the form of at least two folds, which enable the drawer bottom to be transferred or to be transferred from the transport state to the use state in such a way that in the use state of the drawer bottom, in the region of at least two, in particular three or four, sides of the drawer bottom, a first vertical thickness in the use state of the drawer bottom is greater than a second vertical thickness in the use state of the drawer bottom in a middle region, preferably in the region of the centre point, of the drawer bottom.

[0029] In this case, the use state is defined as the folded position in which the drawer bottom can be attached to the drawer side wall. The unfolded position (generally an almost flat plate) can be defined as the transport state. If the folding part is fixed to the drawer bottom, the drawer bottom is transferred from the transport state to the use state. If the folding part is unfolded or can be unfolded, the transport state can be transferred to the use state. In this way, a particularly suitable transport position can be achieved.

[0030] According to an advantageous configuration of the invention, it is specified that the at least two folds are formed as 180° folds or as 90° folds, preferably with a plurality of alternating 180° folds on one side, and / or the at least two folds are fixed to each other or to the drawer bottom via an adhesive bond.

[0031] The 180° bend can ensure a particularly secure connection with the drawer side wall, while the 90° bend can, with just one bend, on the one hand, significantly increase the first thickness relative to the second thickness, and, on the other hand, achieve a continuous or uninterrupted first thickness—regardless of the material thickness of the drawer bottom.

[0032] The adhesive bond makes it possible to prevent unwanted unfolding of the layers and also effectively prevents play between the layers.

[0033] Advantageously, it is specified that the at least two folds are preferably configured as hingeless pivotal connections in the form of film hinges, preferably adhesive hinges or adhesive layers, particularly preferably hot-melt adhesive or PU-based hot-melt adhesive, and / or in the form of flexible layers, preferably elastic films, and / or in the form of residual material of the drawer bottom formed by milling or cutouts in the drawer bottom, and it is specified that preferably at least one pivotal connection is arranged externally on a side surface of the drawer bottom or between the layers formed by the folds of the drawer bottom.

[0034] The term "without hinges" in this context means that no mechanical components such as metallic hinges are required, and the pivot joint can be formed by the layer structure itself - via a film hinge or a flexible layer or milled part as the pivot joint.

[0035] In the case of multiple bends, the pivot joints may also be oriented towards the centre point, whereas in the case of 90° bends, the pivot joints may also be oriented laterally away from the drawer bottom, in particular at 45°.

[0036] It has proven advantageous if the drawer bottom has a projection, bevel or groove in each of the at least two bend regions, and the pivot connection is at least partially arranged in the projection, bevel or groove.

[0037] This allows for the provision of folds with the desired relative orientation of the drawer bottom segments. Furthermore, even placement of the drawer bottom layers can be ensured, particularly in the use position. Alternatively or additionally, protrusions, bevels or grooves can be used to securely connect or wedge-fix multiple layers together, for example via separate mounting devices such as grooved blocks.

[0038] According to an advantageous embodiment of the invention, the first thickness is specified to extend in the plane of the drawer bottom, starting from the side surface in the direction of the centre point of the drawer bottom, over a maximum of 15%, preferably a maximum of 10%, particularly preferably a maximum of 5% of the width of the drawer bottom and / or over a maximum of 10 cm, preferably a maximum of 5 cm, particularly preferably a maximum of 2 cm.

[0039] The extent of the layers toward the center point caused by the spacers is generally arbitrary, with shorter extensions of the layers resulting in greater material savings and larger extensions of the layers resulting in a more secure bond to the drawer sidewalls. For example, the width of the drawer bottom may be 400mm to 800mm, with a typical width being adapted to the 600mm internal dimensions of furniture cabinets. The spacers may generally be integrally formed (across multiple sides) or multi-part (for one side).

[0040] The spacers may be, for example, metal angles or wood strips, and the drawer bottoms are preferably made from hard fibre board or particle board or wood.

[0041] The increase in the first thickness over the second thickness is preferably limited locally, exclusively to the edge regions - in the side regions - and for example does not extend to the middle region of the drawer bottom bend or even extend beyond the height direction of the drawer side wall, which preferably does not correspond to the edge regions of the drawer bottom.

[0042] In an advantageous embodiment of the invention, the drawer bottom has a support layer and a preferably partially arranged and / or glued decorative layer and / or a preferably partially arranged adhesive or film layer.

[0043] The material thickness or second thickness of the drawer bottom generally does not include any decorative, adhesive or film layers that may be present, which can be considered as separate component elements. Preferably, the thickness of these layers (especially for realizing a hingeless pivotal connection) is many times thinner than the material thickness of the drawer bottom.

[0044] The decorative layer can provide an aesthetically pleasing appearance in the area of ​​the drawer interior and can also provide the drawer bottom with different material properties, such as hardness or strength, which can extend the service life of the drawer, for example, by increasing its stability.

[0045] Particularly preferably, the first thickness is substantially 100%, preferably 200% or 300% greater than the second thickness, and / or the first thickness is specified to be between 10 mm and 30 mm, preferably between 15 mm and 20 mm, and / or the second thickness is specified to be between 5 mm and 16 mm, preferably between 8 mm and 12 mm.

[0046] However, particularly in the case of 90° bends or pieces of material that are glued together, the thickness increase may be less than 100%, or for example between 100% and 200%.

[0047] The spacer generally allows for a second thickness increase of 3 mm or 5 mm, or 30% to 60% of the material thickness.

[0048] In embodiments of the present invention, it is specified that at least one spacer, or at least one of the at least two folds present as the case may be, preferably extends only partially across one side of the drawer bottom when the two sides are adjacent to folds or spacers located adjacently in the area of ​​a corner of the drawer bottom.

[0049] This can prevent collision of the spacer (such as the folding portion) in use or collision with other components such as furniture fittings, connecting devices for guide devices, etc.

[0050] According to a preferred embodiment of the present invention, the first thickness is specified to be adapted via at least one spacer so that the drawer bottom corresponds to the drawer sidewalls in a manner that substantially corresponds to the inner spacing of the mounting device, oriented vertically, in the use state of the assembly.

[0051] The term "substantially" in this case means that the design may include an oversize for a friction-locking or form-locking connection (e.g. caused by a fastening barb) or a play for easy assembly to the drawer side wall for the user (which can be compensated for, for example, via attachment means or plastic deformation). Preferably, the oversize or play is at most 10% or 5% of the material thickness of the drawer bottom at the centre point.

[0052] Preferably, the mounting device comprises an abutment web for at least one spacer and a stop for vertically fixing the drawer bottom, which is preferably oriented substantially parallel to the abutment web and / or spatially spaced vertically from the abutment web and arranged vertically above the abutment web in the use state. The inner spacing can be defined as the vertical spacing between the abutment web and the stop.

[0053] It is further preferred that a front drawer wall and / or a rear drawer wall is provided, the front drawer wall and the rear drawer wall having a separate mounting device, preferably U-shaped, and the drawer bottom is at least partially positioned inside the separate mounting device.

[0054] This allows the drawer bottom to be particularly well fixed and supported in all spatial degrees of freedom in the used state of the assembly.

[0055] In another embodiment it is specified that the drawer bottom is fixed to the drawer side wall via at least one attachment means and / or is connected to the drawer side wall in a friction-locking and / or form-locking manner by at least one plastic deformation, preferably the at least one attachment means and / or the at least one plastic deformation are: - partially or completely penetrates at least one layer of the drawer bottom formed by at least one spacer or possibly a fold, and / or - pressing the drawer bottom vertically against one of the two mounting devices, particularly preferably in the use state of the assembly, and / or - in the use state of the assembly, in the vertical direction, completely to the side of the layer formed by at least one spacer or possibly a fold. It has been identified that:

[0056] This makes it possible to prevent the drawer bottom from undesirably sliding out within the assembly through local fixing by pressing via at least one attachment means or by at least one plastic deformation.

[0057] It is particularly preferred that the at least one spacer can be locked in the mounting device, preferably by elastic deformation and / or in a form-locking manner, and / or can be clamped in the mounting device, preferably in a friction-locking manner, and / or the drawer side wall has at least one holding device, preferably pivotable relative to the mounting device and / or at least one holding device removably arranged or positionable on the mounting device, by means of which the at least one spacer can be fixed inside the mounting device.

[0058] This can effectively prevent undesired sliding or falling off of the drawer bottom relative to the drawer side wall. The retaining device can be formed, for example, in the form of a dowel mounted partially within the drawer bottom, or in the form of a (flexible or pivotable) hook that can be pushed into or pressed onto the drawer bottom or drawer side wall.

[0059] Preferably, - preparing the drawer bottom by machining from a plate-like starting material, which is pivotally connected by means of a film hinge or a flexible layer or a milling, and which is folded over via the pivotal connection so that it has a thickness several times its material thickness in the region of the central point, or - providing a film hinge or a flexible layer on the plate-shaped starting material, which is then cut in parts, particularly down to the film hinge or flexible layer, to form the pivot joint and the drawer bottom, and folding the drawer bottom to several times its material thickness in the region of the central point; It has been identified that:

[0060] According to an advantageous configuration of the invention, the preparation method step specifies, preferably computer-aided, adapting the first thickness to the inner spacing of the mounting device and / or adapting the inner spacing of the mounting device to the first thickness and / or adapting the second thickness to a minimum load threshold and / or a maximum load threshold.

[0061] For example, the dimensions of the drawer bottom can be individually adapted via folding to match the dimensions of the drawer side walls and to flexibly match the peripheral conditions, e.g., at the center point, the strength of the drawer bottom to the minimum weight that the drawer must accommodate in any case (without significant elastic deformation) (minimum load threshold), or at the center point, the stability of the drawer bottom to the maximum weight that the drawer can accommodate without destruction (maximum load threshold).

[0062] If the second thickness is specified, the first thickness can be varied by the number of folds or the type of fold; if the first thickness is specified, the second thickness can be varied by the material thickness. For example, the selection of the ideal structure can be performed by a computing unit via a template in a computer or by using an algorithm implemented in a computer.

[0063] Further details and advantages of the invention are explained in more detail below with reference to the illustrated embodiment on the basis of the description of the drawings. [Brief explanation of the drawings]

[0064] [Figure 1a] 1 is a perspective view of a piece of furniture with a drawer including a drawer bottom and assembly according to a preferred embodiment; FIG. [Figure 1b] FIG. [Figure 2] FIG. 1c shows a perspective view of the underside of the drawer bottom and an enlarged detail view of the drawer according to the embodiment of FIG. 1b. [Figure 3a] 1 shows a cross-sectional view of a drawer with a preferred embodiment of the drawer bottom, and an enlarged detail showing the area of ​​the joint between the drawer bottom and the drawer side wall. FIG. [Figure 3b] FIG. 10 is an enlarged detail showing the area of ​​the joint between the drawer bottom and the drawer side wall. [Figure 3c] FIG. 10 is an enlarged detail showing the area of ​​the joint between the drawer bottom and the drawer side wall. [Figure 3d] FIG. 10 is an enlarged detail showing the area of ​​the joint between the drawer bottom and the drawer side wall. [Figure 4a] FIG. 3b is a perspective view of a drawer bottom according to the embodiment of FIG. 3a; [Figure 4b] FIG. 3b is an exploded view of the drawer bottom according to the embodiment of FIG. 3a. [Figure 4c] FIG. 3b is a perspective view of a drawer bottom according to the embodiment of FIG. 3a; [Figure 5a] 10A and 10B are perspective and enlarged detail views of a preferred embodiment of a spacer for a drawer bottom; [Figure 5b] 10A and 10B are perspective and enlarged detail views of a preferred embodiment of a spacer for a drawer bottom; [Figure 5c] 10A and 10B are perspective and enlarged detail views of a preferred embodiment of a spacer for a drawer bottom; [Figure 5d] 10A and 10B are perspective and enlarged detail views of a preferred embodiment of a spacer for a drawer bottom; [Figure 6a] FIG. 10 is a top perspective view of a preferred embodiment of a drawer bottom with spacer folds. [Figure 6b] FIG. 10 is a bottom perspective view of a preferred embodiment of a drawer bottom with spacer folds. [Figure 6c] 1A-1C show two orthogonal views of a preferred embodiment of a drawer bottom with folds as spacers, together with an enlarged detail of the area of ​​the folds. [Figure 7a] 1b is an enlarged detail showing a cross-section of another preferred embodiment of a drawer bottom including an alternative embodiment to the pivot connection of the drawer bottom for use in the furniture of FIG. 1a. FIG. [Figure 7b] 1b is an enlarged detail showing a cross-section of another preferred embodiment of a drawer bottom including an alternative embodiment to the pivot connection of the drawer bottom for use in the furniture of FIG. 1a. FIG. [Figure 7c] 1b is an enlarged detail showing a cross-section of another preferred embodiment of a drawer bottom including an alternative embodiment to the pivot connection of the drawer bottom for use in the furniture of FIG. 1a. FIG. [Figure 7d] 1b is an enlarged detail showing a cross-section of another preferred embodiment of a drawer bottom including an alternative embodiment to the pivot connection of the drawer bottom for use in the furniture of FIG. 1a. FIG.

[0065] Figure 1a shows a piece of furniture with a number of drawers 2. The drawers 2 are movable relative to the furniture cabinet via guide devices. Each drawer 2 has a drawer bottom 1, which can generally be used in other containers as well.

[0066] Figure 1b shows the drawer 2 alone, comprising an assembly of two drawer side walls 25 for the drawer 2, which are U-shaped and in the form of metal cross plates. The drawer 2 has a front drawer wall 28 and a back drawer wall 29.

[0067] Figure 2 differs from Figure 1b only in that the drawer 2 is shown in a view looking underneath the drawer bottom 1. The drawer sidewalls 25 comprise coupling devices for connection to a guide device, in which case the drawer sidewalls 25 may generally comprise container rails for placing the drawer bottom 1 and / or for attachment to the drawer rails of the guide device, or may be formed without container rails, in which case the drawer bottom 1 may be arranged in a profiled portion of the drawer sidewalls 25 and / or the connection to the drawer rails may be via furniture fittings (which can be pressed into the drawer sidewalls 25).

[0068] The drawer side wall 25 has an opening for inserting the attachment means 31, in which case the opening is not necessarily required and can be formed, for example, during the process step of fixing the drawer bottom 1 to the drawer side wall 25.

[0069] The drawer side walls 25 each have a U-shaped mounting device 26 (see Figure 9a) for connecting the drawer bottom 1 to the drawer side walls 25, with the drawer bottom 1 being arranged inside the mounting device 26.

[0070] The drawer front wall 28 and the drawer back wall 29 each have a U-shaped further mounting device 30, with the drawer bottom 1 being located inside the further mounting device 30. Generally, however, a further mounting device is not necessarily required.

[0071] Figure 3a shows the drawer 2 in cross section, where in an enlarged detail in the area where the drawer bottom 1 is joined to the drawer side wall 25 it becomes clear that the drawer bottom 1 comprises a spacer 33, which is arranged on the drawer bottom 1 via fixing means 34 in the form of glue or adhesive. In mirror symmetry, another spacer 33 is arranged on the opposite side of the drawer bottom 1, where in general the adjacent side 4 may be provided with at least one further spacer 33.

[0072] The dotted lines indicate, in outline, that the spacer 33 can be locked in the mounting device 36 by elastic deformation and in a form-locking manner. For this purpose, the drawer side wall 25 can have one (preferably two or three) holding devices 37 that are pivotable relative to or removably arranged on the mounting device 26, by means of which the spacer 33 can be fixed inside the mounting device 26. In this embodiment, the holding device 37 is formed by an inclined plane for locking and fixing the spacer 33. Alternatively or additionally, if the holding device 37 is in the form of an inclined plane and extends, for example, into the region of the positioning of the spacer 33, the spacer 33 can also be clamped in the mounting device 36 in a friction-locking manner.

[0073] The spacer 33 is arranged on the drawer bottom 1 so that a first thickness 5 of the drawer bottom 1 in the vertical direction 6 in the use state 7 of the drawer bottom 1, which passes through the spacer 33 in the region of the side 4 of the drawer bottom 1, is greater than a second thickness 8 of the drawer bottom 1 in the vertical direction 6 in the use state 7 of the drawer bottom 1, in the middle region in the region of the center point 9 of the drawer bottom 1.

[0074] The second thickness 8 is typically less than 16 mm for standard drawer bottom configurations, in which case the second thickness 8 may be reduced to, for example, less than 8 mm.

[0075] When two spacers 33 or one spacer 33 extending over at least two sides 4 are used, the thickness of the drawer bottom 1 is increased or the base reinforced over at least two sides 4 of the drawer bottom 1 in the area of ​​the joint to the drawer side wall 25.

[0076] The drawer bottom 1 is in this example precisely adapted to the inner spacing 27 of the mounting device 26, with a play generally being provided for easier assembly (which can be compensated for via the mounting means 31). It is also conceivable to provide a (slight) overdimension in order to be able to guarantee a secure fit.

[0077] The spacers 33 are formed as wooden strips having a rectangular parallelepiped shape and are formed separately from the plate-like material of the drawer bottom 1 .

[0078] Figures 3b, 3c and 3d differ from Figure 3a only in that different spacers 33 are provided in the region of the side surfaces 4 of the drawer bottom 1 for connection with the drawer side walls 25. Features of one of the spacers 33, such as the geometry or material, may alternatively or additionally be provided in another spacer 33.

[0079] The spacer 33 in Figure 3b is made of metal and has a U-shape, although other geometric shapes such as a T-shape or an X-shape are generally possible.

[0080] The spacer 33 in Figure 3c is machined from a wooden material and has a slope 35 on the surface opposite the drawer bottom 1, which may generally be on the side facing the drawer bottom 1.

[0081] The spacer 33 in FIG. 3d is made of plastic as an injection molded part, has an L-shape, and is hollow with a number of reinforcing stays 36.

[0082] The third thickness 38 of the spacer 33 is greater than the material thickness 32 of the second thickness 8 , in which case the third thickness 38 of the spacer 33 may have a smaller dimension than the material thickness 32 .

[0083] FIG. 4 a shows a spacer 33 extending partly across the side surface 4 , although in this case a spacer 33 extending generally across the entire extent of the side surface 4 may also be provided.

[0084] Figure 4b shows four spacers 33 before attachment to the plate material of the drawer bottom 1 via fixing means 34 in the form of screws. In general, the fixing means 34 may be provided with a dual function as attachment means 31 for connecting the drawer bottom 1 to the drawer side wall 25. Holes in the spacers for the fixing means 34 are not necessarily required.

[0085] Figure 4c differs from Figure 4b only in that the drawer bottom 1 is shown from below in the assembled state.

[0086] Figures 5a, 5b, 5c and 5d show perspective views of the spacers 33 shown in Figures 3a to 3d with enlarged detailed fragmentary views to show the geometric shape, where each spacer 33 can be engaged with the mounting device 36 by elastic deformation or in a form-fitting manner, or can be clamped within the mounting device 36 in a friction-fitting manner, or can be fixed via a retaining device 37 on the drawer side wall 25 or the drawer bottom 1.

[0087] A method for manufacturing a drawer bottom 1 using spacers may comprise preparing a plate-shaped starting material and arranging spacers 33 in the region of at least two side surfaces 4 of the drawer bottom 1, whereby the drawer bottom 1 is thicker in the region of at least two side surfaces 4 than in the central region.

[0088] The following figures are shown with respect to the fold 3 as a spacer 33, in which case the fold 3 can generally be replaced by the spacer 33 shown in Figures 5a to 5d, for example.

[0089] FIG. 6a shows the drawer bottom 1 of the drawer 2 alone, looking towards the top surface of the drawer bottom 1. The drawer bottom 1 has two folds 3 as spacers 33 on each of its four side surfaces 4, so that in the region of the side surfaces 4 of the drawer bottom 1, the first thickness 5 in the vertical direction 6 of the drawer bottom 1 in its in-use state 7 is greater than the second thickness 8 in the vertical direction 6 of the drawer bottom 1 in its middle region (region of the center point 9) in its in-use state 7. The number of folds 3 on one side surface 4 is generally arbitrary. In general, the folds 3 may be arranged on only two mutually opposing side surfaces 4.

[0090] Below, four diagrams are shown which show schematically possible partial areas of the drawer bottom 1.

[0091] In the left-hand illustration, the drawer bottom 1 has a support layer 20 and a decorative layer 21, which may generally be partially arranged between the drawer side walls 25 and may be arranged on the drawer bottom 1 and fixed in place, for example by gluing. It is also possible for the decorative layer 21 to completely cover the support layer 20 on one side, in which case the decorative layer 21 can be folded together with the support layer 20. The decorative layer 21 as a separate material layer does not relate to the second thickness 8 having a lateral extent of the material thickness 32, although the decorative layer 21 is not necessarily required.

[0092] In the left-center view, the drawer bottom 1 is fitted with a film layer 23, which serves as the pivot joint 13 in the form of a flexible layer 15. The flexible layer 15 may be provided, for example, as an elastic film.

[0093] In the illustration on the right-hand center, an adhesive layer 22 is arranged on the drawer bottom 1, which acts as the pivot joint 13 in the form of a film hinge 14. The film hinge 14 can be provided, for example, as an adhesive hinge or as an adhesive layer, preferably as a PU-based hot melt adhesive.

[0094] In the right-hand illustration, the drawer bottom 1 has a pivot connection 13 which is present via a milling 16 as well as in residual material 17. Alternatively or in addition to the milling 16, a recess may be provided in the drawer bottom 1.

[0095] The four schematic examples of layer structures of the drawer bottom 1 can be used alternatively or supplementarily to produce at least two folds 3 of the support layer 20 .

[0096] An exemplary method for manufacturing the drawer bottom 1 can be described as follows: the drawer bottom 1 is prepared by machining from a plate-shaped starting material, the drawer bottom 1 is pivotally connected by film hinges 14 or flexible layers 15 or millings 16, and the drawer bottom 1 is folded via the pivotal connections 13 so that it has a thickness several times its material thickness 32 in the region of the center point 9. If film hinges 14 or flexible layers 15 are used, segments of the drawer bottom 1 can be pivotally connected to the foldable drawer bottom 1 afterwards.

[0097] Alternatively or additionally, the plate-shaped starting material can be provided with a film hinge 14 or a flexible layer 15, which can be cut in parts, in particular down to the film hinge 14 or flexible layer 15, to form the pivot connection 13 and the drawer bottom 1, and the drawer bottom 1 can be folded over to several times its material thickness 32 in the region of the midpoint 9. In this case, the pivot connection is formed by a cutting-type process step, for example sawing or milling. If residual material 17 is used for the pivot connection 13, the film hinge 14 or flexible layer 15 can be omitted.

[0098] As can be seen in Figure 6b, one pivot connection 13 is arranged outwards on a side surface 4 of the drawer bottom 1, and another pivot connection 13 is arranged oriented towards the centre point 9. Alternatively or additionally, the pivot connections can be arranged between the layers 18 formed by the folds 3.

[0099] The bends 3 are formed as 180° bends 10, with two alternating 180° bends 10 provided per side 4.

[0100] Generally, the folds 3 may be fixed to the drawer bottom 1 or the folds 3 to adjacent folds 3 by adhesive bonding.

[0101] In the area of ​​the corner 24, the second thickness 8 is the same as the first thickness 5, since a cutout in the fold 3 is present in this corner area. Two adjacent folds 3 on adjacent side surfaces 4 only partially extend across these side surfaces 4. Generally, this situation can be present for only one side surface 4, or for folds 3 on opposite side surfaces 4.

[0102] FIG. 6 c shows the drawer bottom 1 in an enlarged cross section, where the side 4 is provided with two folds 3 , which form the three layers 18 of the drawer bottom 1 .

[0103] Generally, it may be specified that the drawer bottom 1 has a protrusion or a slope or a groove in the area of ​​the fold 3, in which the pivot connection 13 is partially or completely arranged.

[0104] In the plane of the drawer bottom 19, the first thickness 5 extends from the side 4 towards the centre point 9 of the drawer bottom 1 by 2% to 15% and up to 5cm.

[0105] The first thickness 5 is - excluding the small gap caused by the pivot joint - 200% greater than the second thickness 8, because the material thickness 32 of the drawer bottom 1 at the centre point 9 is double-folded.

[0106] The first thickness 5 is in this embodiment 24 mm and / or the second thickness 8 is 8 mm.

[0107] Figure 7a shows a cross-sectional view of a drawer 2 with a drawer bottom 1 in the assembled state shown in Figure 3c, where the first thickness 5 is adapted via the bends 3 so that the drawer bottom 1 corresponds to the drawer side walls 25 in a manner that substantially corresponds to the inner spacing 27 of the mounting device 26, which is vertically oriented in the use state 7 of the assembly.

[0108] Between the inner spacing 27 and the first thickness 5 there may be a play (for example of a maximum of 10% or 5% of the inner spacing 27), which facilitates the assembly of the drawer bottom 1 on the drawer side wall 25 and can be compensated for by the attachment means 31. The inner spacing 27 can be considered as the minimum distance from the opposing contours of the attachment devices 26.

[0109] Figure 7b differs from Figure 7a only in that the cross-section line extends through fixing means 31 for positionally fixing the drawer bottom 1 on the drawer side wall 25. The drawer bottom 1 is fixed to the drawer side wall 25 via attachment means 31 (the number of which is typically arbitrary and can be pre-defined depending on the requirements for the load capacity of the drawer 2). Alternatively or supplementary to attachment means 31, the drawer bottom 1 can be frictionally or form-lockingly connected to the drawer side wall 25 by means of plastic deformation (e.g. burring or pressing the metal material of the drawer side wall 25 into the wooden material of the drawer bottom 1).

[0110] The attachment means 31 passes completely through two of the three layers 18 of the drawer bottom 1 formed by the folds 3 and partially penetrates the third layer 18. Generally, the top layer 18 in the vertical direction 6 can be pressed against the attachment device 26 by the attachment means. The pressing can be done either upwards in the vertical direction 6 in the use state 7 or downwards in the vertical direction 6 by a pulling force (see Figure 7d).

[0111] Figure 7c shows an embodiment of the assembly with a drawer bottom 1 including a 90° bend 11 secured via a pivot joint 13. In this case, the edge of the side surface 4 can be used for support in a mounting device 26.

[0112] The attachment means 31 are arranged completely to the side of the layer 18 formed by the folds 3 in the vertical direction 6 in the use state 7 of the assembly.

[0113] Figure 7d shows an assembly with a drawer bottom 1 folded once at side 4, in which two layers 18 are formed via folds 3, which are securely connected to the mounting device 26 via mounting means 31.

[0114] An exemplary method for assembling the assembly can be carried out as follows: the drawer bottom 1 is prepared by a method for manufacturing the drawer bottom 1, and two drawer side walls 25 are each provided with one mounting device 26 during the manufacturing process, and then the drawer bottom 1 is placed inside the mounting device 26.

[0115] The fixation of the drawer bottom 1 inside the mounting device 26 can be achieved by means of mounting means 31. Alternatively or additionally, fixation via a frictional or positive connection between the drawer bottom 1 and the mounting device 26 can be ensured, in which case the mounting device 26 can have, for example, a geometric shape that tapers in the direction of the drawer bottom 1. Furthermore, a tapering shape in the direction of the centre point 9 of the drawer bottom 1 can facilitate pressing of the drawer bottom 1 against the drawer side wall 25.

[0116] In the preparation method step, the first thickness 5 can be adapted to the inner spacing 27 of the mounting device 26, or the inner spacing 27 of the mounting device 26 can be adapted to the first thickness 5, or the second thickness 8 can be adapted to a minimum load threshold or a maximum load threshold, for example via an algorithm in the calculation unit.

Claims

1. A drawer bottom (1) for a drawer (2), comprising: The drawer bottom (1) has at least one spacer (33), which is arranged on the drawer bottom (1), preferably via at least one fastening means (34), in such a way that a first thickness (5) of the drawer bottom (1) in the vertical direction (6) in the use state (7) of the drawer bottom (1), which passes through the at least one spacer (33) in the region of at least two, in particular three or four, side surfaces (4) of the drawer bottom (1), is greater than a second thickness (8) of the drawer bottom (1) in the vertical direction (6) in the use state (7) of the drawer bottom (1) in a middle region, preferably in the region of a central point (9) of the drawer bottom (1), wherein the second thickness (8) is less than 16 mm, preferably less than 12 mm, particularly preferably less than 8 mm.

2. The at least one spacer (33) - made of wooden, plastic or metal materials, and / or - formed into strips and / or - formed separately from said drawer bottom (1), and / or - has a substantially rectangular parallelepiped or U-shaped or L-shaped or T-shaped or X-shaped; and / or - has at least one bevel (35) on the surface facing the drawer bottom (1) or on the surface facing away from the drawer bottom (1), and / or - preferably hollow, with at least one reinforcing stay (36) and / or - Existing as an injection-molded part or produced by machining, and / or - has a third thickness (38), said third thickness (38) being at least one-third, preferably at least half and particularly preferably at least the material thickness (32) of said second thickness (8); A drawer bottom (1) according to claim 1.

3. 3. The drawer bottom (1) according to claim 1 or 2, wherein the at least one spacer is present in the form of at least two folds (3) of the drawer bottom (1), by means of which the drawer bottom (1) can be or has been transferred from a transport state to an in-use state (7) in such a way that in the in-use state (7) of the drawer bottom (1), in the region of at least two, in particular three or four, side surfaces (4) of the drawer bottom (1), the first thickness (5) in the vertical direction (6) of the drawer bottom (1) in the in-use state (7) is greater than the second thickness (8) in the vertical direction (6) of the drawer bottom (1) in a middle region, preferably in the region of a central point (9) of the drawer bottom (1).

4. 4. A drawer bottom (1) according to claim 3, wherein the at least two folds (3) are formed as 180° folds (10) or 90° folds (11), preferably with a plurality of alternating 180° folds (10) on one side (4), and / or the at least two folds (3) are fixed to each other or to the drawer bottom (1) via an adhesive bond.

5. 5. A drawer bottom (1) according to claim 3 or 4, wherein the at least two folds (3) are preferably configured as hingeless pivot connections (13), in the form of film hinges (14), preferably adhesive hinges or adhesive layers, particularly preferably hot-melt adhesive or PU-based hot-melt adhesive, and / or in the form of flexible layers (15), preferably elastic films, and / or in the form of residual material (17) of the drawer bottom (1), formed in the drawer bottom (1) by millings (16) or cutouts, and wherein preferably at least one pivot connection (13) is arranged externally on the side surfaces (4) of the drawer bottom (1) or between the layers (18) of the drawer bottom (1) formed by the folds (3).

6. 6. The drawer bottom (1) according to claim 5, wherein the drawer bottom (1) has a protrusion, a slope or a groove in each of the areas of the at least two bent portions (3), and the pivot connection portion (13) is at least partially arranged in the protrusion, the slope or the groove.

7. 7. A drawer bottom (1) according to any one of claims 1 to 6, wherein the first thickness (5) extends in the drawer bottom plane (19) from the side surface (4) in the direction of the centre point (9) of the drawer bottom (1) over a maximum of 15%, preferably a maximum of 10%, particularly preferably a maximum of 5% of the width of the drawer bottom (1) and / or over a maximum of 10 cm, preferably a maximum of 5 cm, particularly preferably a maximum of 2 cm.

8. 8. The drawer bottom (1) according to any one of claims 1 to 7, wherein the drawer bottom (1) has a support layer (20) and a preferably partially arranged and / or glued decorative layer (21) and / or a preferably partially arranged adhesive layer (22) or film layer (23).

9. 9. The drawer bottom (1) according to any one of claims 1 to 8, wherein the first thickness (5) is substantially 100%, preferably 200% or 300% greater than the second thickness (8), and / or the first thickness (5) is between 10 mm and 30 mm, preferably between 15 mm and 20 mm, and / or the second thickness (8) is between 5 mm and 16 mm, preferably between 8 mm and 12 mm.

10. 10. A drawer bottom (1) according to any one of claims 1 to 9, wherein the at least one spacer (33) or at least one of the at least two folds (3) present as the case may be extends only partially over one side (4) of the drawer bottom (1), preferably on two side surfaces (4) adjacent to adjacent folds (3) or spacers (33) located in the area of ​​a corner (24) of the drawer bottom (1).

11. 11. An assembly comprising two drawer side walls (25), preferably U-shaped and / or metal cross plates, for a drawer (2), each having one preferably U-shaped mounting device (26) for connecting the drawer bottom (1) to the drawer side wall (25), and a drawer bottom (1) according to any one of claims 1 to 10, which is at least partially arranged inside the mounting device (26).

12. 12. An assembly according to claim 11, wherein the first thickness (5) is adapted via the at least one spacer (33) so that the drawer bottom (1) corresponds to the drawer side wall (25) in a manner that substantially corresponds to an inner spacing (27) of the mounting device (26) oriented vertically in the use state (7) of the assembly.

13. 13. An assembly according to claim 11 or 12, wherein a front drawer wall (28) and / or a rear drawer wall (29) is provided, said front drawer wall and said rear drawer wall having a further mounting device (30), preferably U-shaped, and said drawer bottom (1) is at least partially arranged inside said further mounting device (30).

14. The drawer bottom (1) is fixed to the drawer side wall (25) via at least one attachment means (31) and / or is connected to the drawer side wall (25) in a friction-locking and / or form-locking manner by at least one plastic deformation, preferably the at least one attachment means (31) and / or the at least one plastic deformation are: - partially or completely penetrates at least one layer (18) of the drawer bottom (1) formed by the at least one spacer (33) or possibly the fold (3), and / or - pressing the drawer bottom (1) vertically (6) against one of the mounting devices (26), particularly preferably in the use position (7) of the assembly, and / or - in the use state (7) of the assembly, it is arranged in the vertical direction (6) completely to the side of the layer (18) formed by the at least one spacer (33) or the possibly present fold (3); Assembly according to any one of claims 11 to 13, characterized in that:

15. 15. An assembly according to any one of claims 11 to 14, wherein the at least one spacer (33) can be locked in the mounting device (36), preferably by elastic deformation and / or in a form-locking manner, and / or can be clamped in the mounting device (36), preferably in a friction-locking manner, and / or the drawer side wall (25) has at least one retaining device (37), preferably pivotable relative to the mounting device (26) and / or at least one retaining device (37) removably arranged or positionable on the mounting device (26), by means of which the at least one spacer (33) can be fixed inside the mounting device (26).

16. A drawer (2) equipped with an assembly according to any one of claims 11 to 15.

17. A method for manufacturing a drawer bottom (1) according to any one of claims 1 to 8, comprising the following method steps: Prepare a plate-shaped starting material, said at least one spacer (33) is arranged in the region of at least two side surfaces (4) of said drawer bottom (1), so that said drawer bottom (1) is thicker in the region of said at least two side surfaces (4) than in the central region; A method characterized by the method steps.

18. - preparing said drawer bottom (1) by machining from a plate-like starting material, pivoting said drawer bottom (1) by means of a film hinge (14) or a flexible layer (15) or a milled section (16), and folding said drawer bottom (1) via the pivoting section (13) so that it has a thickness several times its material thickness (32) in the middle area, preferably in the area of ​​the central point (9), or - providing a plate-shaped starting material with a film hinge (14) or a flexible layer (15), which is then machined in parts, in particular down to the film hinge (14) or the flexible layer (15), in order to form the pivot joint (13) and the drawer bottom (1), and folding the drawer bottom (1) to a thickness several times its material thickness (32) in the middle region, preferably in the region of the central point (9); 18. The method of claim 17.

19. A method for assembling an assembly according to any one of claims 11 to 15, comprising the following method steps, in particular the following method steps to be performed in chronological order: - preparing the drawer bottom (1), preferably according to a method according to claim 17 or 18, - two drawer side walls (25) each provided with one mounting device (26); - said drawer bottom (1) is at least partially positioned inside said mounting device (26); A method characterized by the method steps.

20. 20. The method according to claim 19, wherein in a preparation method step, preferably computer-aided, the first thickness (5) is adapted to an inner spacing (27) of the mounting device (26) and / or the inner spacing (27) of the mounting device (26) is adapted to the first thickness (5) and / or the second thickness (8) is adapted to a minimum load threshold and / or a maximum load threshold.

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