Drawer guide

Abstract

A drawer guide (4) for a drawer for movably supporting a drawer (3) in a furniture cabinet (2), comprising a cabinet side rail (9) to be attached to the furniture cabinet (2), at least one drawer side rail (10) to be coupled to the drawer (3) supported movably in a longitudinal direction (L) relative to the cabinet side rail (9), and optionally at least one intermediate rail arranged between the cabinet side rail (9) and the at least one drawer side rail (10), the drawer guide (4) having a self-weight and a maximum bearing strength, the ratio of the self-weight of the drawer guide (4) to the maximum bearing strength of the drawer guide (4) being less than 1:50, preferably less than 1:57, and particularly preferably less than 1:65.

Description

[Technical Field]

[0001] The present invention provides a drawer guide for a drawer for movably supporting a drawer in a furniture cabinet, comprising: - a cabinet side rail to be attached to the furniture cabinet; - at least one drawer side rail to be connected to the drawer, which is supported so as to be longitudinally movable relative to the cabinet side rail; - optionally, at least one intermediate rail disposed between the cabinet side rail and at least one drawer side rail; Including, - A drawer guide for a drawer, the drawer guide having a dead weight and a maximum bearing strength.

[0002] The rails of drawer guides are often manufactured from flat sheet metal, which is then processed by bending and / or deformation to form a profile rail. The finished profile is able to withstand the horizontal and vertical loads applied to the drawer guide, thereby stably guiding the associated drawer.

[0003] A common problem is the amount of metal typically required to manufacture a drawer guide. The increased material usage increases weight and costs in mass production. Therefore, it is desirable to use as little metal as possible, as resource-efficient use of raw materials offers both environmental and economic benefits.

[0004] SUMMARY OF THE INVENTION The object of the present invention is to provide an improved drawer guide for a drawer of the type mentioned at the beginning, which at least partially avoids the above-mentioned problems of the prior art.

[0005] This problem is solved according to the invention by the features of claim 1. Further advantageous configurations of the invention are described in the dependent claims.

[0006] According to the present invention, it is specified that the ratio of the weight of the drawer guide for a drawer to the maximum bearing strength of the drawer guide for a drawer is less than 1:50, preferably less than 1:57, and particularly preferably less than 1:65.

[0007] Traditionally, those skilled in the art of furniture fittings have started from the premise that a specified amount of material is required to achieve a drawer guide with a specified stability at a set maximum load capacity. The applicant's conventional drawer guides have a ratio of the drawer guide's weight to the drawer guide's maximum load capacity of, for example, 1:40 or more. A smaller ratio was not considered feasible.

[0008] Within the scope of the present invention, the Applicant's skilled artisans have surprisingly discovered that, contrary to this expectation, they have gone into a completely different regime in the construction of drawer guides for drawers.

[0009] This allows the amount of material used to be significantly reduced, for example halved, which entails a significant conservation of resources at the same time as a significant reduction in production costs, especially in view of the large numbers prevalent in the furniture fittings industry.

[0010] It should be noted that the technical inspection and evaluation of drawer guides is standardized, at least in the European region. In this regard, the DIN EN 15338 standard is mentioned, which specifies the strength and durability of drawers and their components. However, this standard does not state the ratio of the dead weight to the maximum strength of drawer guides.

[0011] The maximum bearing force is not an arbitrary magnitude but is defined for a person skilled in the art and is usually also marked on the drawer guide for the drawer, for example by embossing.

[0012] Advantageously, at least one drawer side rail is movable relative to the cabinet side rails between a retracted end position over the drawer length and an extended end position, the at least one drawer side rail having a front end to be coupled to the front panel of the drawer, and the front end of the at least one drawer side rail can be lowered in the extended end position by up to 4% of the drawer length when a load corresponding to the maximum bearing capacity is applied.

[0013] The present invention is particularly advantageously suitable for drawer guides for drawers which, in the fully pushed-in state, have a length of 200 mm to 650 mm, and / or a weight of 125 g to 550 g, and / or a maximum bearing capacity of 15 kg to 35 kg, and / or are made at least predominantly from steel. According to a specific embodiment, it may be provided that the drawer guide for a drawer has a maximum bearing capacity of 25 kg, a length of 500 mm, and a weight of approximately 350 g.

[0014] Alternatively or additionally, at least one rolling element is arranged between the cabinet side rail and the at least one drawer side rail, preferably the at least one rolling element is rotatably supported about a rotation axis, particularly preferably the rotation axis is oriented transversely to the longitudinal direction, and / or at least one carriage, in particular made of plastic, is provided in which the at least one rolling element is arranged, and / or the at least one rolling element is substantially cylindrical and / or the at least one rolling element is at least predominantly made of plastic.Drawer side rails for such drawers differ significantly in their structural form from drawer rails for other drawers, such as heavy-duty drawers or ball-bearing guides.

[0015] It has proven advantageous if the drawer guide for the drawer is formed, at least in certain sections, from a flat sheet metal having a material thickness of 0.5 mm to 1.0 mm, preferably 0.7 mm, thus allowing for a significantly thinner sheet metal to be used than in conventional drawer guides for drawers with comparable construction.

[0016] Particularly advantageously, a smaller ratio of the weight of the drawer guide for a drawer to the maximum bearing strength of the drawer guide for a drawer compared to the prior art can be achieved by the drawer guide for a drawer having at least one, preferably two or more, characteristics selected from the following group of characteristics i. to v.:

[0017] Feature i.: At least one rail of the rails has, when viewed in a cross section normal to the longitudinal direction, at least one profile formed from at least one flat sheet metal having two longitudinal edges extending parallel to one another, the profile having at least one turn-up portion with at least twice the material thickness on at least one longitudinal edge, preferably on both longitudinal edges.

[0018] Characteristic ii.: The cabinet side rail has at least one mounting section with a mounting surface, which can be abutted against the furniture cabinet at least in a predetermined section when assembling the drawer guide for the drawer in the furniture cabinet, and the at least one mounting section has at least one opening, preferably circular, for passing a mounting means, preferably a screw, and the at least one opening is surrounded by a ridge on a second side spaced from the mounting surface by the material thickness of the mounting section, and the ridge protrudes laterally from the second side of the mounting section.

[0019] Feature iii.: At least one rail of the plurality of rails has a profile formed from at least one flat sheet metal when viewed in a cross section normal to the longitudinal direction, at least one end face of the profile, in particular two end faces, formed with a tapered portion.

[0020] Feature iv.: At least one rail of the plurality of rails has at least one profile formed from at least one flat sheet metal having two longitudinal edges extending parallel to one another when viewed in a cross section normal to the longitudinal direction, and in order to reinforce the profile, at least one embossed portion is arranged extending over at least a predetermined area over at least two side surfaces of the profile arranged substantially perpendicular to one another, the side surfaces being arranged in the longitudinal direction, and the at least one embossed portion being arranged substantially perpendicular to the longitudinal direction.

[0021] Characteristic v.: At least one rail of the plurality of rails has, when viewed in a cross section normal to the longitudinal direction, at least one profile made of at least one flat sheet metal having two longitudinal edges extending parallel to one another, and at least two embossments are provided on at least two side surfaces oriented substantially perpendicular to one another and / or adjacent to one another, preferably arranged in at least a predetermined area and / or extending over at least two side surfaces, the at least two embossments being oriented alternately towards the inner and outer regions of the at least one rail, in particular at least two embossments being adjacent to one another in the longitudinal direction.

[0022] Feature i. is associated with the following technical advantages: - on the one hand, it allows for a simple bending process of sheet metal, and on the other hand, it allows for an increased stiffness of the profile in the area of ​​the turn-up; - the folds result in rounded edges which reduce the risk of injury from otherwise sharp longitudinal edges; - thinner sheet metal can be used for the manufacture of drawer guides for drawers (i.e., for example, sheet metal having a thickness of 0.7 mm instead of sheet metal having a thickness of 1.5 mm); - at least one turn-up allows for increased stiffness in areas of the cabinet side rails and / or drawer side rails and / or intermediate rails that are subject to high loads, in particular the tracks of the cabinet side rails and / or drawer side rails and / or intermediate rails, in which rolling elements (in particular rolling elements of a carriage) can roll, - In the exemplary case where a relatively thin sheet metal having a thickness of 0.7 mm is used, the highly loaded area is increased to a thickness of 1.4 mm by the turn-up. The load-bearing raceway allows the rolling elements to be optimally guided along the rail. In contrast, the remaining areas of the rail, which are not exposed to high loads, can be constructed with a single, reduced material thickness (i.e., 0.7 mm thick). This measure significantly reduces the amount of material used, the weight, and the cost of manufacturing the drawer guide for the drawer.

[0023] With regard to feature i., it has proven advantageous if at least one fold is arranged on at least one longitudinal edge of the cabinet side rail, the fold can be applied to the furniture cabinet when the cabinet side rail is installed, and / or the at least one longitudinal edge has at least two sheet metal sections that are applied to each other at least in a predetermined area, preferably the at least two sheet metal sections have at least one common punched-out section and / or at least one longitudinal edge has at least one bend that extends in the longitudinal direction when viewed in a cross section normal to the longitudinal direction, and preferably the at least one fold is formed on at least one longitudinal edge of the cabinet side rail.

[0024] Alternatively or additionally, it may be provided that the drawer guide for the drawer has at least one rolling element, which is capable of running along at least one fold in the longitudinal direction at least in a predetermined section.

[0025] Furthermore, with regard to characteristic i., it may be advantageous if at least one drawer side rail has at least one fold on both longitudinal edges with at least twice the material thickness, both folds being oriented transversely, preferably substantially perpendicularly, to one another and / or one of both folds being directed inwards and the other of both folds being directed outwards.

[0026] Feature ii. is associated with the following technical advantages: the opening is surrounded by a preferably annular ridge on the side of the mounting section facing the screw head, which ridge is provided for at least partially accommodating the screw head, so that the screw head can be at least partially, preferably substantially completely, sunk into the ridge; - the ridge reinforces the periphery of the opening, i.e., the force coming from the underside of the screw head can be distributed over a larger area; the ridge reduces the sinking of the screw head into the thin-walled metal of the mounting section, thus reducing the risk of damage to the periphery of the opening; The protuberances are produced, for example, in the form of embossments, so that corresponding recesses are formed in the mounting surface of the mounting section, in which the fastening material protruding from the furniture part can be at least partially accommodated, thereby reducing the risk of the fastening material getting between the mounting surface of the mounting section and the furniture part, which would lead to an undesired separation of the mounting section from the furniture part.

[0027] With regard to characteristic ii., it has proven advantageous if the raised portion is substantially toroidal when viewed in cross section and / or is integrally formed with at least one mounting section and / or is produced by embossing in at least one mounting section.

[0028] Feature iii. is associated with the following technical advantages: - the tapered portion can be formed without a cutting-type separation method with a cutting width dependent on a cutting-type separation method, for example by mechanical breaking, bending and / or cutting, which can reduce material in the form of chips and / or reduce the degree of deformation during the process of shortening to produce the drawer guide for the drawer, The risk of injuries, particularly due to burrs, for the user and / or installer of the drawer guide during installation or maintenance work of the drawer guide is reduced, and no cutting-type post-processing steps are necessarily required.

[0029] With regard to characteristic iii., it has proven advantageous if the taper has an angle in the range of 60° to 140°, preferably 75° to 105°, particularly preferably substantially 90°. It is preferably provided that at least one end face, preferably both end faces, is formed substantially burr-free and / or that the cross section of the taper parallel to the longitudinal extension of the metal sheet has substantially the shape of a triangle, preferably an isosceles triangle, and it is preferably provided that the cross section of the taper is formed convexly and / or concavely.

[0030] For example, the same or different depths and / or geometries can be considered for at least one notch in the sheet metal, which notch is manifested as a taper in the drawer guide for the drawer, the geometry of which can be flexibly adjusted via the geometry of the notch. The taper can act as a defined target breaking point for tearing and / or breaking off.

[0031] Properties iv. and v. lead to the following technical advantages: - the drawer guides for the drawers are reinforced through a local increase in strength / stability, in particular increasing the moment of resistance and / or the moment of inertia and / or reducing vibrations and deformations caused by compression, tension, torsion, bending, etc.; - the positioning of the at least one embossment in the longitudinal direction can be flexibly adapted to the requirements for the drawer guide, so that areas of the drawer guide that are subject to particularly high loads due to the structural design also have particularly high stability or strength via the at least one embossment; - the degree of possible weight reduction of the drawer guide is higher than the degree of weight class reduction (or weight reduction) due to the weight reduction of the furniture piece that is to be moved by the drawer guide and that mechanically interacts with the drawer guide. For a given weight class (or weight) of the furniture piece that is to be moved by the drawer guide, it is possible to take advantage of material savings by reducing the thickness of the sheet metal for forming the drawer guide and / or to move heavier furniture pieces compared to conventional drawer guides, particularly with the same service life, and with proper use. - can have a particularly advantageous influence on the force distribution during the bending process for forming the drawer guide and / or during use of the rail in areas of the drawer guide that are subject to high loads, and in particular can ensure a high degree of geometrical accuracy of the drawer guide, - when the embossments are arranged alternately (relative to the adjacent side surfaces and / or relative to the inner / outer regions), the bending process from the flat sheet metal to the profile shape of the drawer guide for the drawer can be facilitated, whereby profiles can be produced with particularly high geometrical accuracy, which can be maintained over the life of the drawer guide for the drawer; - Effectively counteracts tearing transverse to the longitudinal direction of the drawer guide and / or deformations, particularly in the longitudinal direction, that impair the functionality of the drawer guide, in which the angle between the side faces of the profile is undesirably increased under load, and no additional components are required to achieve this technical effect.

[0032] In this context, stampings are also sometimes called bead-like bulges or reinforcing bulges in the sense of cold-hardened plastic deformations that are pressed into the metal sheet or profile, which result in increased stability or strength, in particular by increasing the moment of resistance and / or moment of inertia and / or reducing vibrations and deformations caused by pressure, tension, twisting, bending, etc.

[0033] With regard to features iv. and v., it has proven advantageous if at least one carriage with at least one rolling element and / or sliding element is arranged or can be arranged in the drawer guide for the drawer, and if at least one embossment is arranged on at least one cabinet side rail and / or at least one drawer side rail in such a way that the at least one carriage and / or at least one rolling element and / or sliding element can pass through the at least one embossment in the longitudinal direction without contact.

[0034] This makes it possible to ensure a user-friendly guidance of the drawer guide for the drawer, the movement of the at least one carriage not being impaired by the at least one embossment.

[0035] Alternatively or additionally, it may be provided that in order to reinforce the profile, exactly three embossments are arranged on at least two substantially perpendicularly arranged side surfaces of at least one rail, at least in certain areas.

[0036] In the prior art, small material thicknesses result in significant losses of movement and / or service life during rail operation. The three alternating embossments relative to adjacent sides and / or relative to the inner and outer regions of at least one rail, particularly a drawer side rail, a cabinet side rail, and / or an intermediate rail, allow small material thicknesses to be used even on rails with heavy, highly load-bearing or movable furniture parts.

[0037] It has proven advantageous if the at least two embossments are arranged on the same side or on the two sides so as to extend over the at least two side faces and / or are arranged alternately on the at least two side faces, preferably in the transition region of the at least two side faces, alternately relative to the inner and outer regions.

[0038] For example, one side may have textured features arranged in alternating directions in the inner and outer regions. Alternatively or additionally, one of the textured features may extend across two side surfaces and / or there may be an alternating arrangement of textured features relative to the side surfaces, with two side-by-side textured features oriented substantially perpendicular to each other.

[0039] According to one embodiment, it may be specified that at least, and preferably possibly exactly two embossments, if a group is present, are directed towards the inner region of at least one rail, and one embossment is arranged midway between the at least two embossments and is directed towards the outer region of at least one rail in order to increase the tensile / compression resistance.

[0040] By increasing the number of embossments, the tensile / compression and load-bearing capacity of the rail is gradually increased, and the rail can withstand particularly high forces without plastic and / or inappropriate elastic deformation due to the alternating embossments, and in particular due to the embossments oriented in opposite directions (inner or outer regions) midway between two embossments. Furthermore, at least one embossment can serve as a support when assembling the drawer guide for the drawer.

[0041] Finally, with regard to characteristics iv. and v., it is conceivable that at least one embossed portion extends over 1 / 3 to 3 / 4 of a side surface in a direction relatively perpendicular to the longitudinal direction of at least one rail, and / or over less than 1 / 3, preferably less than 1 / 4, of a side surface adjacent to this side surface.

[0042] Generally, at least one embossment may extend across the entire side surface in a direction perpendicular to the longitudinal direction; due to the low loads on the free longitudinal edge, such a structural arrangement is generally unnecessary. In particular, if the embossments are arranged alternately with respect to the side surfaces, the extension length of the individual embossments with respect to the side surfaces can be reduced, since both sides are reinforced by the embossments. This can improve the aesthetic appearance and / or reduce manufacturing costs. At least one embossment may terminate in or extend beyond the transition region of the side surface.

[0043] Further details and advantages of the invention will become apparent from the following description of the drawings. [Brief explanation of the drawings]

[0044] [Figure 1a] FIG. 1 is a perspective view showing a piece of furniture equipped with a drawer. [Figure 1b] FIG. 1 is a side view of a piece of furniture with a drawer pulled out. [Figure 2] FIG. 10 is a perspective view showing a drawer guide for a drawer. [Figure 3a] FIG. 10 is a cross-sectional view showing the drawer guide for the drawer without the carriage. [Figure 3b] FIG. 10 is a cross-sectional view showing the drawer guide for the drawer together with the carriage. [Figure 4a] 10 is a perspective view showing the cabinet-side rail of the drawer guide for the drawer from a first viewing direction. FIG. [Figure 4b] FIG. 10 is a cross-sectional view showing the cabinet-side rail of the drawer guide for the drawer. [Figure 5a] FIG. 10 is a perspective view of the cabinet-side rail of the drawer guide for the drawer, as viewed from a second viewing direction. [Figure 5b] FIG. 10 is a side view showing the cabinet-side rail of the drawer guide for the drawer from the front side. [Figure 5c] FIG. 10 is a side view showing the cabinet-side rail of the drawer guide for the drawer from the rear side. [Figure 6a] FIG. 10 is a perspective view showing the drawer-side rail of the drawer guide for the drawer. [Figure 6b] FIG. 10 is a side view showing the drawer-side rail of the drawer guide for the drawer from the front side. [Figure 7a] 10A-10C show a method of manufacturing a profile for a rail of a drawer guide for a drawer. [Figure 7b] 10A-10C show a method of manufacturing a profile for a rail of a drawer guide for a drawer. [Figure 7c] 10A-10C show a method of manufacturing a profile for a rail of a drawer guide for a drawer.

[0045] 1a shows a perspective view of a piece of furniture 1 with a furniture cabinet 2, in which drawers 3 are supported so as to be movable relative to the furniture cabinet 2 via drawer guides 4. For reasons of clarity, the topmost drawer 3 is not shown. Each drawer 3 has a front 5, a drawer base 6, drawer side walls 7 and a back wall 8.

[0046] The drawer guide 4 for the drawer includes a cabinet side rail 9, which can be attached to the furniture cabinet 2 via a mounting section 11. Furthermore, at least one drawer side rail 10 is provided. The drawer side rail 10 can be coupled to the drawer 3 and is supported so as to be movable relative to the stationary cabinet side rail 9.

[0047] In some cases, the drawer guide 4 for the drawer may have an intermediate rail that can run between the cabinet side rail 9 and the drawer side rail 10, which allows the drawer 3 to be fully extended in relation to the furniture cabinet 2.

[0048] The drawer side walls 7 may each have one cavity profile 7a, which is connected or can be connected to at least one drawer side rail 10 of the drawer guide 4 for the drawer.

[0049] Figure 1b shows a side view of furniture 1 with an extended drawer 3. At least one drawer side rail 10 of a drawer guide 4, on which the drawer 3 is supported, is movable relative to the cabinet side rail 9 over the drawer length (n) between a retracted and an extended end position.

[0050] At least one drawer side rail 10 has a front end connected to the front panel 5 of the drawer 3, and the front end of the at least one drawer side rail 10 can be lowered by up to 4% of the drawer length when a load corresponding to the maximum bearing capacity is applied in the extended end position. The lowering of the front end is indicated by an arrow.

[0051] 2 shows a perspective view of the drawer guide 4 for a drawer, showing a cabinet side rail 9 to be attached to the furniture cabinet 2 and a drawer side rail 10 that can run in the longitudinal direction (L). The cabinet side rail 9 can be attached to the furniture cabinet 2 via a mounting section 11.

[0052] The mounting section 11 has a mounting surface 19 which can at least partially abut against the furniture cabinet 2 when the drawer guide 4 for the drawer in the furniture cabinet 2 is assembled.

[0053] The mounting section 11 may have at least one opening 12, preferably circular, for passing a mounting means 28, in particular a screw 28a, by means of which the mounting section 11 can be attached to the furniture cabinet 2a.

[0054] At least one opening 12 is preferably surrounded by a ridge 21 on a second surface 20 opposite the mounting surface 19, which ridge 21 protrudes laterally from the second surface 20 of the mounting section 11.

[0055] The head of the screw 28a can be at least partially accommodated by the raised portion 21. Furthermore, the peripheral edge of the opening 12 is reinforced by the raised portion 21, reducing the risk of the peripheral edge of the opening 12 being damaged.

[0056] The mounting section 11 and / or the cabinet side rail 9 and / or the drawer side rail 10 may each have at least one embossment 13 (also called a bead or reinforcing bulge). At least one opening 12 for the passage of the screw 28a may be located between two embossments 13, thereby increasing the moment of resistance in this area.

[0057] Figures 3a and 3b show cross sections of the drawer guide 4 for a drawer without and with the carriage 22, with Figure 3a showing the drawer guide 4 for a drawer in a cross section normal to the longitudinal direction (L). Cabinet side rails 9 that can be attached to the furniture cabinet 2 and drawer side rails 10 that can run relative to the cabinet side rails 9 can be seen.

[0058] The mounting section 11 of the cabinet side rail 9 has a mounting surface 19 which can at least partially abut against the furniture cabinet 2 when the cabinet side rail 9 is mounted in the furniture cabinet 2 .

[0059] The cabinet side rails 9 and / or the drawer side rails 10 are formed by bending flat sheet metal into sections 9a, 10a with two longitudinal edges 14a, 14b (drawer side rail 10) and two longitudinal edges 15a, 15b (cabinet side rail 9). The flat sheet metal has a predetermined material thickness (X).

[0060] The flat metal sheets forming the sections 9a, 10a may have a material thickness (X) of, for example, 0.5 mm to 1.0 mm, preferably 0.7 mm.

[0061] The profile 9a of the cabinet side rail 9 and / or the profile 10a of the drawer side rail 10 has at least one longitudinal edge 14a, 14b, 15a, 15b, preferably both longitudinal edges 14a, 14b, 15a, 15b, at least one turn-up 16, 17 having at least twice the material thickness (2X). Preferably, at least one turn-up 16, 17 has exactly twice the material thickness (2X).

[0062] However, if appropriate, the folds 16, 17 can also be folded three or more times, resulting in a three or more times thicker material (X).

[0063] At least one fold 16, 17 may be arranged on a longitudinal edge 15b of the cabinet side rail 9, which fold 16, 17 can be applied to the furniture cabinet 2 when the cabinet side rail 9 is installed.

[0064] According to one embodiment, it may be provided that at least one folded portion 16, 17 has at least two sheet metal sections 24a, 24b that at least partially abut against each other at at least one longitudinal edge 14a, 14b, 15a, 15b.

[0065] At least one drawer side rail 10 may have at least one fold 16, 17 on both longitudinal edges 14a, 14b with at least twice the material thickness (2X), the folds 16, 17 being oriented transversely, preferably substantially perpendicularly, to each other and / or one of the folds 16, 17 being directed inward and the other of the folds 16, 17 being directed outward.

[0066] At least one fold portion 16, 17 has at least one bend 18 extending in the longitudinal direction (L) when viewed in a cross section normal to the longitudinal direction (L) at at least one longitudinal edge 14a, 14b, 15a, 15b, and preferably at least one fold portion 16, 17 is formed on at least one longitudinal edge 15a of the cabinet side rail 9.

[0067] At least one mounting section 11 may have at least one opening 12, preferably circular, for passing a mounting means 28 (FIG. 2), preferably a screw 28a.

[0068] According to one embodiment, at least one opening 12 may be surrounded by a ridge 21 projecting laterally from a second surface 20 spaced from the mounting surface 19 by the material thickness (X) of the mounting section 11.

[0069] The ridge 21 surrounding the opening 12 can significantly improve the rigidity of the mounting section 11 in the area of ​​the opening 12, which is particularly advantageous when using sheet metal with a small material thickness (X).

[0070] At least one embossment 13 may have a longitudinal direction extending transversely to the longitudinal direction (L) of the cabinet side rail 9. At least one embossment 13 or multiple embossments 13 may be located on a vertical leg of the mounting section 11 and / or on a lateral leg of the mounting section 11.

[0071] FIG. 3b shows in cross section the drawer guide 4 for the drawer shown in FIG. 3a together with the loaded rolling elements 23a, 23b, 23c.

[0072] Preferably, it is provided that the rolling elements 23a, 23b, 23c are supported in one common carriage 22, which is supported so as to be able to move between the cabinet side rail 9 and at least one drawer side rail 10.

[0073] According to a possible embodiment, it may be provided that at least one rolling element 23a has a cylindrical shape in the assembled position, so that it can rotate about a horizontal axis and run along the turn-up portion 16 of the drawer side rail 10.

[0074] At least one other rolling element 23 a is rotatable about a horizontal axis and is capable of running along the turn-back portion 17 of the cabinet side rail 9 in the assembled position.

[0075] At least one further rolling element 23c is rotatable in the assembled position about a vertical axis and is capable of running along a section of the cabinet side rail 9 having double wall thickness (2X).

[0076] A carriage 22 with rolling elements 23a, 23b, 23c (which may alternatively or additionally be formed as sliding elements) is arranged in the drawer guide 4 for the drawer, and the embossed portion 13 is arranged on the cabinet side rail 9 and the drawer side rail 10 so that the carriage 22 and the rolling elements 23a, 23b, 23c can pass through this embossed portion 13 in the longitudinal direction L without contact.

[0077] 4a and 4b show a cabinet side rail 9 of a drawer guide 4 for a drawer in a perspective view and a cross-sectional view from a first viewing angle.

[0078] 4a shows in a perspective view a profile 9a of the cabinet side rail 9. The mounting section 11 for mounting the cabinet side rail 9 has a mounting surface 19 for bearing against the furniture cabinet 2. Arranged in the mounting section 11 is at least one opening 12 for passing a mounting means 28, in particular a screw 28a, by means of which the cabinet side rail 9 can be attached to the furniture cabinet 2.

[0079] At least one opening 12 is surrounded by a ridge 21 that protrudes laterally from the second face 20 of the mounting section 11, at a second face 20 that is spaced apart from the mounting face 19 by a material thickness (X). The heads of the screws 28a for attaching the mounting section 11 to the furniture cabinet 2 are housed at least partially, preferably substantially completely, inside the annular ridge 21 in the assembled state.

[0080] The abutting sheet metal sections 24a, 24b of the turn-up parts 16, 17 are connected to one another by at least one common punched-out section 25, 26. In this way, the turn-up parts 16, 17 can be additionally stabilized.

[0081] In one embodiment, two punched portions 25, 26 are provided spaced apart from each other in the longitudinal direction (L).

[0082] According to a preferred embodiment, at least one punched-out section 25, 26 is arranged at the end of a profile 9a of the cabinet side rail 9 and / or a profile 10a of at least one drawer side rail 10, and / or - at least two common punched-out portions 25, 26 are provided, preferably the at least two punched-out portions 25, 26 being formed as mirror images of one another; and / or - at least one running carriage 22 (FIG. 3b) is provided, and at least one punched-out portion 25, 26 forms a stop for limiting the travel distance of the at least one running carriage 22; and / or At least one punched section 25, 26 is formed as a bent tongue. It is stipulated that:

[0083] At least one punched portion 25, 26 can thus assume a dual function: on the one hand, it serves to stabilize the abutting sheet metal sections 24a, 24b of the turn-up portions 16, 17;

[0084] On the other hand, the laterally projecting punched sections 25, 26 are provided to limit the travel path of the running carriage 22 in the longitudinal direction (L). The carriage 11 attains end positions determined by the punched sections 25, 26 and as a result cannot travel beyond the end of the cabinet side rail 9 and / or at least one drawer side rail 10.

[0085] Figure 4b shows in cross section the drawer guide 4 for the drawer shown in Figure 4a. At least one recess 27 for partially accommodating generated cutting material is arranged on the mounting surface 19 of the mounting section 11 and adjacent to the at least one opening 12. This makes it possible to prevent the mounting section 11 from undesirably lifting up from the furniture part 2 when the mounting section 11 is screwed together.

[0086] 5a, 5b and 5c show the cabinet side rail 9 of the drawer guide 4 for the drawer in a perspective view from a second viewing angle, a side view from the front and a side view from the back.

[0087] 5a shows a cabinet side rail 9 with two groups of three embossments 13 each, which are located spatially spaced apart from one another in the edge regions of the cabinet side rail 9. The cabinet side rail 9 has a profile 9a made of flat sheet metal with two longitudinal edges 15a, 15b extending parallel to one another in a cross section normal to the longitudinal direction L. Each group has three embossments 13 oriented perpendicular to one another and located on two adjacent side surfaces 31, with the embossments 13 pointing alternately toward the inner region 32 and the outer region 33 of the cabinet side rail 9. The embossments 13 of a group are adjacent to one another in the longitudinal direction L.

[0088] The outer embossments 13 of the group each extend over one-third to three-quarters of the side surface 31 and terminate in the transition region of the adjacent side surface 31, while the intermediate embossments 13 extend over the entire side surface 31 and terminate in the transition region. Extension of the embossments 13 beyond the transition region is likewise possible.

[0089] The punched section 13 has a cross section that tapers in the direction of the longitudinal edges 15a, 15b. The three embossed surfaces are oriented pyramid-like against one another, since generally in the region of the transition of the side surfaces 31 greater loads occur than in the region of the longitudinal edges 15a, 15b.

[0090] 5b and 5c differ from FIG. 5a only by a different viewing angle, where the cabinet side rail 9 can be seen from the rear and from the front. Per group, exactly three embossments 13 for reinforcing the profile 9a are partially arranged on two mutually perpendicularly arranged side surfaces 31 of the cabinet side rail 9.

[0091] Two embossments 13 per group are located on the same side surface 31 and terminate at the transition region between two adjacent side surfaces 31. The embossments are alternately located on the two adjacent side surfaces 31, with the three embossments 13 in each group alternately located relative to the inner region 32 and the outer region 33 in the transition region between the two side surfaces 31. The three embossments 13 in each group are alternately oriented toward the inner region 32 and the outer region 33, with two embossments 13 oriented toward the inner region 32 of the cabinet side rail 10 and one embossment 13 located midway between the two embossments 13 and oriented toward the outer region 33 of the cabinet side rail 9 to increase tension / compression resistance.

[0092] In FIG. 5c it can be seen that the embossment 13 extends over the step in the section 9a of the cabinet side rail 9.

[0093] 6a and 6b show a drawer side rail 10 of a drawer guide 4 for a drawer in a perspective view and a side view.

[0094] 6a shows a drawer side rail 10 having a profile 10a made of flat sheet metal with two longitudinal edges 14a, 14b extending parallel to one another in a cross section normal to the longitudinal direction L, and reinforced by embossments 13 extending across two mutually orthogonal side surfaces 31 of the profile 10a. The side surfaces 31 are arranged in the longitudinal direction L, and the embossments 13 are arranged perpendicular to the longitudinal direction L. The drawer side rail embossment 13 has three mutually orthogonal embossed surfaces.

[0095] FIG. 6b shows the drawer rail 10 in a side view. The embossments 13 extend relatively perpendicularly to the longitudinal direction L of the drawer rail 10 across two adjacent side surfaces 31, and punched sections are provided in the drawer rail 10. These punched sections face the inner region 32 and serve as stops for the running carriage 22. The punched sections are solidly connected to two adjacent side surfaces 31 of the drawer rail 10, one of which has the embossment 13 and the other has the turn-up 16. The embossments 13 extend across the two side surfaces 31, right up to the transition region of the associated side surface 31. The embossments 13 face the outer region 33.

[0096] 7a, 7b and 7c show a method for manufacturing profiles 9a, 10a for the rails of a drawer guide 4 for a drawer.

[0097] 7a shows a drawer side rail 10 of a drawer guide 4 for a drawer, which, when viewed in cross section normal to the longitudinal direction L, comprises a profile 10a made from a flat sheet metal. One of both end faces 29 of the profile 10a has a tapered portion 30 resulting from mechanical breaking off of the semi-finished product; in general, both end faces 29 may have a tapered portion 30.

[0098] To form the tapered portions 30, two notches 36 were machined into the flat sheet metal. Both notches 36 extended across the width of the sheet metal, oriented perpendicular to the longitudinal direction L, and were located on both surfaces of the sheet metal. The cross-section of the notches 36 was generally arbitrary and could have, for example, triangular or elliptical sections, as shown in the schematic detailed partial view of the cross-section of the sheet metal. The geometry and depth of the multiple notches 36 could also generally vary, with four notches 36 being particularly preferred, allowing a drawer side rail 10, cabinet side rail 9, or intermediate rail with one tapered portion 30 per end face 30 to be formed by non-cutting mechanical separation.

[0099] In Figure 7b, the sheet metal can be seen to have two notches 36 with trapezoidal cross section, which notches 36 will form two tapers 30 (one taper per drawer rail 10) after the cut-to-length process of the drawer rails 10. Generally, however, only notches 36 provided on the surface of the sheet metal can be used. Advantageously, the notches 36 are provided before the bending process, but this is not essential.

[0100] 7c shows an embossing process for producing the notch 36 via an embossing punch 37 and an embossing roller 38, with two embossing rollers or two embossing punches 37 being particularly preferred. The material thickness X of the sheet metal is locally reduced, so that in the rail to be formed a taper 30 with a 90° angle 34 and a burr-free end face 29 results.

[0101] The cross section 35 of the taper parallel to the longitudinal extension of the sheet metal has the shape of an isosceles triangle. Depending on the notch 36, other geometric shapes of the cross section 35 of the taper are possible, for example a right-angled triangle for a notch 36 on one side. The taper 30 may have tapering ridges due to manufacturing and may be configured concave or convex.

Claims

1. A drawer guide (4) for a drawer for movably supporting a drawer (3) in a furniture cabinet (2), - cabinet side rails (9) to be attached to said furniture cabinet (2); at least one drawer side rail (10) to be connected to the drawer (3), supported so as to be movable in the longitudinal direction (L) relative to the cabinet side rail (9); Optionally, at least one intermediate rail disposed between the cabinet side rail (9) and the at least one drawer side rail (10); Including, - a drawer guide (4) for a drawer, in which the drawer guide (4) for a drawer has a dead weight and a maximum bearing strength, The ratio of the weight of the drawer guide (4) for the drawer to the maximum strength of the drawer guide (4) for the drawer is less than 1:50; The drawer guide (4) for the drawer has the following group of characteristics i. to vii., namely: Feature i. At least one of the rails (9, 10) has, when viewed in a cross section normal to the longitudinal direction (L), at least one profile (9a, 10a) made of at least one flat sheet metal with two longitudinal edges (14a, 14b, 15a, 15b) extending parallel to one another, and the profile (9a, 10a) has at least one turn-up portion at at least one longitudinal edge (14a, 14b, 15a, 15b) with at least twice the material thickness (2X), and the at least one turn-up portion (16, 17) is - arranged on at least one longitudinal edge (14a, 14b, 15a, 15b) of the cabinet side rail (9) and / or the drawer side rail (10), such that the fold (16, 17) can be applied to the furniture cabinet (2) when the cabinet side rail (9) is installed; and / or - said at least one longitudinal edge (14a, 14b, 15a, 15b) has at least two sheet metal sections (24a, 24b) which are abutted against one another at least in certain areas, and / or - at least one longitudinal edge (14a, 14b, 15a, 15b) has, when viewed in a cross section normal to said longitudinal direction (L), at least one bend (18) extending in said longitudinal direction (L), Characteristic ii. At least one of the rails (9, 10) has at least one profile (9a, 10a) made of at least one flat sheet metal having two longitudinal edges (14a, 14b, 15a, 15b) extending parallel to one another when viewed in a cross section normal to the longitudinal direction (L), and the profile (9a, 10a) has at least one turn-up portion at at least one longitudinal edge (14a, 14b, 15a, 15b) having at least twice the material thickness (2X), and the at least one turn-up portion (16, 17) is the at least one longitudinal edge (14a, 14b, 15a, 15b) has at least two sheet metal sections (24a, 24b) which are abutted against one another at least in certain areas, the at least two sheet metal sections (24a, 24b) having at least one common punched-out section (25, 26), and / or - at least one longitudinal edge (14a, 14b, 15a, 15b), when viewed in a cross section normal to said longitudinal direction (L), has at least one bend (18) extending in the longitudinal direction (L), and said at least one fold (16, 17) is formed on at least one longitudinal edge (15a, 15b) of said cabinet side rail (9); Feature iii. At least one of the rails (9, 10) has, when viewed in a cross section normal to the longitudinal direction (L), at least one profile (9a, 10a) made of at least one flat sheet metal having two longitudinal edges (14a, 14b, 15a, 15b) extending parallel to one another, and the profile (9a, 10a) has at least two times the material thickness (2X) at at least one longitudinal edge (14a, 14b, 15a, 15b). the at least one drawer side rail (10) has at least one fold (16) on both longitudinal edges (14a, 14b) with at least twice the material thickness (2X), the folds (16) being oriented transversely relative to each other and / or one fold of the folds (16) being directed inward and the other fold of the folds (16) being directed outward; Feature iv. At least one of the rails (9, 10) has a profile (9a, 10a) formed from at least one flat sheet metal when viewed in a cross section normal to the longitudinal direction (L), and at least one end face (29) of the profile (9a, 10a) is formed with a tapered portion (30); Characteristic v. At least one of the rails (9, 10) has, when viewed in a cross section normal to the longitudinal direction (L), at least one profile (9a, 10a) made of at least one flat sheet metal having two longitudinal edges (14a, 14b, 15a, 15b) extending parallel to one another, and extending in at least a predetermined area over at least one side surface (31) of the profile (9a, 10a) arranged perpendicular to one another in order to reinforce the profile (9a, 10a). the side surfaces (31) are arranged in the longitudinal direction (L), the at least one embossed portion (13) is arranged perpendicular to the longitudinal direction (L), and the at least two embossed portions (13) are arranged on the same side surface (31) or on the two side surfaces (31) so as to extend across the at least two side surfaces, and / or are arranged alternately on the at least two side surfaces (31). Feature vi) At least one of the rails (9, 10) has, when viewed in a cross section normal to the longitudinal direction (L), at least one profile (9a, 10a) made of at least one flat sheet metal having two longitudinal edges (14a, 14b, 15a, 15b) extending parallel to one another, and at least one embossment (13) extending over at least a predetermined area on at least one side surface (31) of the profile (9a, 10a) arranged perpendicular to one another is arranged to reinforce the profile (9a, 10a). the side surfaces (31) are arranged in the longitudinal direction (L), the at least one embossed portion (13) is arranged perpendicular to the longitudinal direction (L), at least two embossed portions (13) are directed towards the inner region (32) of the at least one rail (9, 10), and one embossed portion (13) is arranged intermediately between the at least two embossed portions (13) and is directed towards the outer region of the at least one rail (9, 10) to increase the tensile and / or compressive resistance. Feature vii) at least one of the rails (9, 10) has, when viewed in a cross section normal to the longitudinal direction (L), at least one profile (9a, 10a) made of at least one flat sheet metal with two longitudinal edges (14a, 14b, 15a, 15b) extending parallel to one another, and is provided with at least two embossments (13) that are oriented alternately towards an inner region (32) and an outer region (33) of the at least one rail (9, 10); having at least one characteristic selected from A drawer guide (4) for a drawer, characterized in that

2. A drawer guide (4) for a drawer as described in claim 1, wherein the ratio of the weight of the drawer guide (4) for a drawer to the maximum strength of the drawer guide (4) for a drawer is less than 1 to 57.

3. A drawer guide (4) for a drawer as described in claim 1, wherein the ratio of the weight of the drawer guide (4) for a drawer to the maximum strength of the drawer guide (4) for a drawer is less than 1 to 65.

4. A drawer guide (4) for a drawer as described in claim 1, wherein the drawer guide (4) for a drawer has two or more of the characteristics selected from the group.

5. The drawer guide (4) for the drawer has the characteristic i. or ii., the profile (9a, 10a) has at least one turn-up at both longitudinal edges (14a, 14b, 15a, 15b) with at least twice the material thickness (2X); A drawer guide (4) for a drawer according to claim 1.

6. The drawer guide (4) for the drawer has the characteristic iii., Both folds (16) are oriented at right angles to each other; A drawer guide (4) for a drawer according to claim 1.

7. The drawer guide (4) for the drawer has the characteristic iv., The two end faces (29) of the profile (9a, 10a) are formed with tapered portions (30). A drawer guide (4) for a drawer according to claim 1.

8. The drawer guide (4) for the drawer has the characteristic v., the at least two embossed portions (13) are alternately arranged relative to the inner region and the outer region in the transition region of the at least two side surfaces (31); A drawer guide (4) for a drawer according to claim 1.

9. The drawer guide (4) for the drawer has the characteristic vii, the at least two embossments (13) are arranged in at least predetermined areas of at least two mutually orthogonally oriented and / or adjacent side surfaces (31) and / or extend across at least two side surfaces (31); A drawer guide (4) for a drawer according to claim 1.

10. The drawer guide (4) for the drawer has the characteristic vii, The at least two embossed portions (13) are adjacent to each other in the longitudinal direction. A drawer guide (4) for a drawer according to claim 1.

11. 2. The drawer guide (4) for a drawer according to claim 1, wherein the at least one drawer side rail (10) is movable relative to the cabinet side rail (9) between a retracted end position and an extended end position over the drawer length (n), the at least one drawer side rail (10) has a front end to be coupled to the front panel (5) of the drawer (3), and the front end of the at least one drawer side rail (10) can be lowered by a maximum of 4% of the drawer length (n) when a load corresponding to the maximum bearing strength is applied in the extended end position.

12. The drawer guide (4) for the drawer is - in the fully compressed state, it has a length of between 200 mm and 650 mm; and / or - has a weight of between 125g and 550g; and / or - have a maximum bearing capacity of 15 kg to 35 kg, and / or - be made at least to a large extent from steel, A drawer guide (4) for a drawer according to claim 1.

13. 2. The drawer guide (4) for a drawer according to claim 1, wherein at least one rolling element (23a, 23b, 23c) is arranged between the cabinet side rail (9) and the at least one drawer side rail (10).

14. The at least one rolling element (23a, 23b, 23c) is supported so as to be rotatable about an axis of rotation, and / or at least one carriage (22) is provided, in which the at least one rolling element (23a, 23b, 23c) is arranged; and / or the at least one rolling element (23a, 23b, 23c) is cylindrically shaped, and / or the at least one rolling element (23a, 23b, 23c) is made at least predominantly of plastic; A drawer guide (4) for a drawer according to claim 13.

15. A drawer guide (4) for a drawer as described in claim 13, wherein the at least one rolling element (23a, 23b, 23c) is rotatably supported around a rotation axis, and the rotation axis is oriented transversely to the longitudinal direction (L).

16. 2. The drawer guide (4) for a drawer according to claim 1, wherein the drawer guide (4) for a drawer is formed, at least in a predetermined section, from a flat sheet metal having a material thickness (X) of 0.5 mm to 1.0 mm.

17. A drawer guide (4) for a drawer as described in claim 1, wherein the drawer guide (4) for a drawer is formed from a flat metal sheet having a material thickness (X) of 0.7 mm, at least in a predetermined section.

18. The drawer guide (4) for the drawer has the characteristic iv., and the tapered portion (30) is - has an angle (34) ranging from 60° to 140°, and / or the cross section (35) of the taper parallel to the longitudinal extension of the metal sheet has a triangular shape; A drawer guide (4) for a drawer according to claim 1.

19. The drawer guide (4) for a drawer has the characteristic iv., and the tapered portion (30) is - has an angle (34) ranging from 75° to 105°, and / or the cross section (35) of the taper parallel to the longitudinal extension of the metal sheet has the shape of an isosceles triangle; A drawer guide (4) for a drawer according to claim 1.

20. The drawer guide (4) for a drawer has the characteristic iv., and the tapered portion (30) is - has an angle (34) of 90°, and / or the cross section (35) of the taper parallel to the longitudinal extension of the metal sheet has a triangular shape, said cross section (35) of the taper being convex and / or concave; A drawer guide (4) for a drawer according to claim 1.

21. The drawer guide (4) for a drawer has the characteristic iv., and the tapered portion (30) is - has an angle (34) in the range of 60° to 140°, and at least one end face (29) is formed without burrs; A drawer guide (4) for a drawer according to claim 1.

22. The drawer guide (4) for a drawer has the characteristic iv., and the tapered portion (30) is - has an angle (34) ranging from 60° to 140°, both end faces (29) being formed without burrs; A drawer guide (4) for a drawer according to claim 1.

23. 2. The drawer guide (4) for a drawer (4) according to claim 1, wherein the drawer guide (4) for a drawer has the characteristic v., wherein at least one carriage (22) with at least one rolling element (23a, 23b, 23c) and / or sliding element is arranged or can be arranged in the drawer guide (4) for a drawer, and wherein the at least one embossment (13) is arranged on the at least one cabinet side rail (9) and / or at least one drawer side rail (10) in such a way that the at least one carriage (22) and / or the at least one rolling element (23a, 23b, 23c) and / or sliding element can pass through the at least one embossment (13) in the longitudinal direction (L) without contact.

24. 2. The drawer guide (4) for a drawer according to claim 1, wherein the drawer guide (4) has the characteristic v. and wherein, for the reinforcement of the profile (9a, 10a), exactly three embossments (13) are arranged, at least in certain areas, on at least two orthogonally arranged side surfaces (31) of the at least one rail (9, 10).

25. A drawer guide (4) for a drawer according to claim 1, wherein the drawer guide (4) for a drawer has the characteristic v., and the at least two embossed portions (13) are arranged on the same side (31), or on the two side surfaces (31) so as to extend across the at least two side surfaces, and / or are arranged alternately on the at least two side surfaces (31).

26. A drawer guide (4) for a drawer as described in Claim 25, wherein the at least two embossed portions (13) are arranged alternately relative to the inner region and the outer region in the transition region of the at least two side surfaces (31).

27. 2. The drawer guide (4) for a drawer according to claim 1, wherein the drawer guide (4) for a drawer has the characteristic v., and wherein at least two embossments (13) are oriented towards the inner region (32) of the at least one rail (9, 10), and one embossment (13) is arranged intermediately between the at least two embossments (13) and is oriented towards the outer region of the at least one rail (9, 10) to increase the tensile and / or compressive resistance.

28. A drawer guide (4) for a drawer according to claim 1, wherein the drawer guide (4) for a drawer has the characteristic v., and the at least one embossed portion (13) extends over an area of ​​1 / 3 to 3 / 4 of the side surface (31) in a direction relatively perpendicular to the longitudinal direction (L) of the at least one rail (9, 10), and / or over an area of ​​less than 1 / 3 of the side surface (31) adjacent to the side surface (31).

29. A drawer guide (4) for a drawer according to claim 1, wherein the drawer guide (4) for a drawer has the characteristic v., and the at least one embossed portion (13) extends over an area of ​​1 / 3 to 3 / 4 of the side surface (31) in a direction relatively perpendicular to the longitudinal direction (L) of the at least one rail (9, 10), and / or extends over an area of ​​less than 1 / 4 of the side surface (31) adjacent to the side surface (31).

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