EP4373354A1

EP4373354A1 - Drawer pull-out guide for movably supporting a drawer on a furniture body

Info

Publication number: EP4373354A1
Application number: EP22747247.9A
Authority: EP
Inventors: Olaf Isele
Original assignee: Julius Blum GmbH
Current assignee: Julius Blum GmbH
Priority date: 2021-07-23
Filing date: 2022-07-19
Publication date: 2024-05-29
Also published as: US20240156260A1; CN117769372A; TWI822196B; WO2023000005A1; TW202315551A; AT525324A1; JP2024524754A

Abstract

The invention relates to a drawer pull-out guide (1) for movably supporting a drawer on a furniture body, comprising: - at least one body rail (2) to be secured to the furniture body, and - at least one drawer rail (3) which is to be connected to the drawer and which is movably mounted relative to the at least one body rail (2) in a longitudinal direction (4). At least one of the rails has at least one profiled section (9), which is made of at least one flat sheet metal (6) and which comprises two longitudinal edges (7) running parallel to each other, in a cross-section (5) that is normal to the longitudinal direction (4), wherein - at least one embossing (10) which extends at least partly over at least two profiled section (9) lateral surfaces (8) arranged substantially orthogonally to each other is provided in order to reinforce the profiled section (9) of the at least one rail, the lateral surfaces (8) are arranged in the longitudinal direction (4), and the at least one embossing (10) is arranged substantially orthogonally to the longitudinal direction (4). The at least one embossing (10) faces in the direction of an outer region (12) of the at least one rail and/or the at least one rail is designed as a storage rail (3) and/or at least two embossings (10) are provided, said at least two embossings (10) facing in the direction of an inner region (11) and in the direction of an outer region (12) of the at least one rail in an alternating manner.

Description

Drawer pull-out guide for movably mounting a drawer on a furniture body

The invention relates to a drawer pull-out guide for movably mounting a drawer on a furniture body according to the preamble of claim 1. The invention also relates to a method for producing at least one such drawer pull-out guide.

A general problem in the production of splints, especially for the furniture industry, is the need for metal, which is necessary for the manufacture of a splint. A high use of material leads to a high weight and increased costs in serial production. It is therefore desirable to use as little metal as possible, especially since resource-conserving use of raw materials has both ecological and economic advantages.

Such a drawer pull-out guide is already known from document EP 2 429 340 B1, where, with regard to resource-saving use of raw materials, a reduction in the base material of a rail in a strip-shaped section with reduced wall thickness is compensated by local wall thickness increases in order to be able to maintain sufficient strength properties of the rail. However, since this measure affects a limited area of the rail for a specific area of application for fastening the rail, the material saving is limited in relation to the total weight of the rail with the same functionality.

Further drawer pull-out guides are known from the documents DE 102019 111 655 A1, DE 102013 111 076 A1, DE 102013 010 577 A1 and DE 10 2019 111292 A1.

One measure for saving metal is the use of thin-walled sheet metal, the weight of the rail also being able to be reduced in an advantageous manner. The disadvantage here, however, is that due to the reduction in weight of the rail, in particular due to reduced moments of inertia/resisting moments of the resulting reduced cross-sectional area of the profile, a load capacity of the rail is significantly reduced. The weight reduction of the rail therefore corresponds to a reduced possible weight class of furniture parts that interact mechanically with the rail and can be operated properly with a practicable service life, so that this measure is not suitable for heavy furniture parts or high demands. However, in many respects there is a long-standing need, especially in the furniture industry, to generate material savings through thin-walled rails, whereby in relation to thick-walled rails there is an increased ratio of weight reduction of the rail to weight class of furniture parts which can be moved by the rail. is effected.

The objective technical task of the present invention is therefore to provide a drawer slide that is improved over the prior art and a method for producing such a drawer slide, in which the disadvantages of the prior art are at least partially eliminated, and which are characterized in particular by a particularly favorable Distinguish reduction of material of the rail with a particularly high resilience or strength/stability of the rail.

This object is solved by the features of claim 1.

It is therefore provided according to the invention that at least one embossing extending at least in regions over at least two side surfaces of the profile arranged essentially orthogonally to one another is arranged to stiffen the profile of the at least one rail, the side surfaces extending in the longitudinal direction and the at least one embossing essentially orthogonally is arranged in the longitudinal direction, with the at least one embossing pointing in the direction of an outer area of the at least one rail and/or the at least one rail being in the form of a drawer rail, and/or at least two, preferably at least in some areas of at least two, being oriented essentially orthogonally to one another and /or embossings arranged on adjoining side faces and/or extending over at least two side faces are provided, the at least two embossings pointing alternately in the direction of an inner area and in the direction of an outer area of the at least one rail, in particular wherein the at least two embossings adjoin one another in the longitudinal direction.

Both through the arrangement of the at least one embossing extending over at least two adjacent side surfaces of the profile and through the arrangement of the at least two embossings in alternating orientation on the at least one rail - in particular the at least one body rail, the at least one drawer rail and/or the at least one possibly existing middle rail - a stiffening of the rail as such can be generated going beyond a local strength/stability increase.

A particularly effective increase in stability with reduced weight of the rail by saving material can be ensured, for example, if the embossings arranged alternately (inwards/outwards) are arranged on two orthogonally adjacent side surfaces, preferably alternately (with regard to the arrangement on side surfaces) and/or over one another extend across at least two orthogonally adjacent side surfaces.

In addition, the positioning of the at least one embossing in the longitudinal direction can be flexibly adapted to the requirements of the at least one cabinet rail and/or the at least one drawer rail, so that areas of the rail with particularly high loads due to the structural design via the at least one embossing can also have a particularly are equipped with high stability/strength.

According to the invention, it is possible for a degree of weight reduction of the at least one rail to be higher than a degree of the weight class reduction (or weight reduction) associated with the weight reduction on furniture parts to be moved by the rail, With a given weight class of furniture parts to be moved, a saving in material can be used by reducing the wall thickness of the metal sheet to form the rail. With the same weight, it is possible to move heavier furniture parts with the same service life if used properly.

In addition, there is the positive property that a distribution of forces, in particular during a bending process and/or during use of the rail, can be influenced particularly favorably in regions of the rail with high stress, with the geometric accuracy of the rail being able to be ensured to a particularly high degree. In addition, with an alternating arrangement of embossing relative to the inner area and the outer area and/or relative to two side surfaces, the bending process from a flat sheet to a profile shape of the rail can be promoted in order to be able to manufacture a profile with particularly high precision of the geometry, which can be maintained over the period of use.

Under load, a rail tends to deform - particularly in the longitudinal direction - and to gape transversely to the longitudinal direction, with an angle between side surfaces of the profile increasing undesirably. The at least one embossing effectively prevents the profile from gaping under load, with an increase in a section modulus of the profile or a stability/strength of the profile also effectively counteracting a deformation of the profile in the longitudinal direction. As a result of the at least one embossing, no additional structural components are required in order to achieve this technical effect.

In this context, the technical term embossing means a plastic deformation in the sense of strain hardening, which is driven into a sheet metal or a profile. Such reinforcements of thin-walled assembly components against deformations are generally referred to as beads, with sharp-edged beads being referred to as folds. An embossing serves to increase the stability or strength of the rail, in particular by increasing the moments of resistance and/or moments of inertia over the profile of the rail and is accompanied by a reduction in vibrations and deformations generated by pressure, tension, torsion, bending, etc. In this context, a bead driven into the sheet metal acts as a reinforcement of the existing geometry of the rail.

In test runs, for example, a conventional rail used as a carcass rail with a weight of 1134 g was reduced by a weight of 426 g with the same weight class for movable furniture parts thanks to the structural redesign and a reduced material thickness.

The drawer pull-out guide can generally comprise at least one center rail as a furniture rail, which is arranged on the at least one cabinet rail and/or the at least one drawer rail, wherein the at least one center rail can be considered to belong to the at least one cabinet rail or the at least one drawer rail in this context.

As stated at the outset, protection is also sought for a method for producing at least one such drawer pull-out guide, in which the following method steps are carried out: a flat, preferably metallic, particularly preferably steel, sheet metal with a longitudinal direction and two cover surfaces is used as a semi-finished product for the at least one rail, preferably the at least one body rail, the at least one drawer rail and/or the at least one center rail that may be present, the metal sheet is provided with at least one embossing on at least one top surface, preferably by at least one embossing stamp and/or at least one embossing roller, with the at least one embossing is arranged essentially orthogonally to the longitudinal direction, the sheet metal is bent so that a profile of the at least one rail is created in a cross section orthogonal to the longitudinal direction and the at least one embossing is at least partially applied r two substantially orthogonal to each other Extends side surfaces of the profile to stiffen the profile, wherein the at least one embossing points in the direction of an outer area of the at least one rail.

As stated at the outset, protection is also sought for a method for producing at least one such drawer pull-out guide, in which the following method steps are carried out: a flat, preferably metallic, particularly preferably steel, sheet metal with a longitudinal direction and two cover surfaces is used as a semi-finished product for the at least one rail, preferably the at least one body rail, the at least one drawer rail and/or the at least one center rail that may be present, the metal sheet is provided with at least one embossing on both top surfaces, preferably by at least one embossing stamp and/or at least one embossing roller, the at least an embossing is arranged essentially orthogonally to the longitudinal direction, the sheet metal is bent so that a profile of the at least one rail arises in a cross section orthogonal to the longitudinal direction and the at least two embossings alternate in the direction of an inner region iches and in the direction of an outer area of the at least one rail.

It is particularly advantageous if the embossings arranged alternately relative to an inner region of the rail extend over two side surfaces and/or are arranged alternately relative to two adjacent and essentially orthogonally oriented side surfaces.

Especially with regard to the requirements for rails in the furniture industry or furniture branch, the introduction of alternating embossings relative to an inner area of a profile of the rail is not trivial, with two embossing dies - designed, for example, as notching dies - or two embossing rollers - designed, for example, as notching rollers - both particularly preferred Top surfaces, preferably sequentially in an embossing process step or iteratively in a large number of embossing process steps, provided with a profile.

Since the at least one middle rail does not necessarily have to be provided in the drawer pull-out guide according to the invention, the advantageous embodiments of the invention are directed in relation to the at least one cabinet rail that is absolutely necessary and/or the at least one drawer rail that is absolutely necessary; However, the features of the advantageous exemplary embodiments of the drawer pull-out guide are due to features in connection with the at least one cabinet rail and/or the at least one drawer rail - in particular those of the dependent claims - to be applied in the same way to the at least one center rail that may be present.

The features of the device claims can be transferred to the method claims and vice versa.

Advantageous embodiments of the invention are defined in the dependent claims.

According to an advantageous embodiment of the invention, it is provided that at least one carriage with at least one rolling body and/or sliding body is or can be arranged on the drawer pull-out guide, the at least one embossing being arranged on the at least one cabinet rail and/or the at least one drawer rail in such a way that that the at least one embossing in the longitudinal direction can be passed without contact by the at least one carriage and/or the at least one rolling body and/or sliding body.

This ensures user-friendly guidance of the at least one drawer rail relative to the at least one cabinet rail, with the movement of the at least one carriage not being impaired by the at least one embossing. It is advantageously provided that the profile of the at least one cabinet rail and/or the at least one drawer rail has at least one fold with at least twice the material thickness of the metal sheet on at least one longitudinal edge, preferably on two longitudinal edges.

The at least one fold can increase the section modulus of the rail, with a rail with a material thickness of the sheet metal being increased from 0.7 mm to 1.5 mm locally, for example, in order to be able to use the same weight classes of furniture parts properly despite the lower material thickness or where at least the reduction in the weight class is relatively lower compared to the weight reduction of the rail.

It has proven to be favorable that at least one side surface of the profile, on which at least one fold is arranged, is in the form of a track for the linear movement of the at least one carriage along the longitudinal direction, it being preferably provided that the at least one rolling element and/or Sliding body is at least partially movable in the longitudinal direction along the at least one fold.

This enables a particularly compact drawer pull-out guide, with a region of the rail reinforced by the at least one fold ensuring particularly comfortable rolling and/or sliding characteristics of the at least one carriage without undesirably deforming the rail under load.

According to an advantageous embodiment of the invention it is provided that a fold is arranged on two longitudinal edges of the profile and an embossing is arranged on a side surface with a folded longitudinal edge and a further embossing is arranged on a side surface without folded longitudinal edge.

Such an arrangement of folds and embossings can ensure that an increase in stability is generated essentially over the entire profile, with specific Regions are individually adjusted in terms of strength.

It has proven to be advantageous that at least one fold points in the direction of the inner area and at least one further fold points in the direction of the outer area of the at least one cabinet rail and/or the at least one drawer rail, it being preferably provided that the at least one embossing on the side surfaces of the at least a cabinet rail and/or the at least one drawer rail is arranged on which no fold is arranged.

This makes it possible for the at least one inward-pointing fold to be used as a running track and for the at least one outward-pointing fold not to restrict the movement of the at least one carriage, or for a compact and lightweight rail to be provided.

An advantageous variant is that the at least one fold comprises at least one, preferably exactly two, spaced apart from each other in the longitudinal direction and/or double the material thickness of the metal sheet, stiffening device, it being preferably provided that the at least one stiffening device is punched and/or protrudes transversely from the at least one fold and/or comprises a bend and/or is arranged at least in certain areas parallel to the at least one fold and/or is arranged at least in certain areas orthogonally to the at least one fold.

The at least one stiffening device effectively counteracts a gaping of the profile under load, so that geometric fidelity is increased. In addition, the at least one stiffening device increases the stability and/or

Strength properties of the rail. The at least one stiffening device can also act in the sense of a dual function as a connection device of the at least one cabinet rail and/or the at least one drawer rail to a furniture part, with one punching particularly preferably being oriented orthogonally to the side surface and another punching through a bend parallel to the side surface is arranged.

It is particularly preferred that at least one stop is arranged at least in certain areas on at least two substantially orthogonally arranged side faces of the at least one cabinet rail and/or the at least one drawer rail, with preferably provision being made for the at least one stop to point in the direction of the inner region of the at least one cabinet rail and/or the at least one drawer rail is punched protruding from the profile and/or is materially connected to the two side surfaces and/or is arranged on a side surface on which a fold is optionally arranged and is arranged on a side surface on which optionally no Fold is arranged.

The at least one stop means that a sufficiently large contact surface for the at least one carriage can be generated, so that the service life of the at least one carriage is long even if the at least one carriage is subjected to shock loads. Particularly preferably, the at least one stop is a corner of the profile that protrudes into the inner region of the profile and, by being connected to two side surfaces, defines a stable abutment for the at least one carriage.

In one embodiment of the invention, it is provided that the at least one stop is arranged parallel to the at least one embossing with a lateral offset, it preferably being provided that the at least one stop extends in a direction orthogonal to the longitudinal direction via a longitudinal edge and the at least one Stamping extends over a further longitudinal edge of the at least one body rail and/or the at least one drawer rail. Particularly preferably, the at least one embossing and the at least one stop overlap in the direction orthogonal to the longitudinal direction, with one longitudinal edge having the function of delimiting the at least one carriage due to the at least one stop and the other longitudinal edge, which is spatially separate from the longitudinal edge and at which the at least one embossing is arranged, which has the function of particularly high stiffening of the profile. The two longitudinal edges particularly preferably represent a longitudinal edge on the profile, which adjoins two side faces, with in particular two remaining longitudinal edges each adjoining only one side face.

According to a preferred exemplary embodiment of the invention, it is provided that the at least one embossing is arranged in an end region of the at least one cabinet rail and/or the at least one drawer rail in relation to the longitudinal direction, with the at least one stop possibly being arranged between the end region and the at least one embossing is.

Since the end area is usually exposed to particularly high dynamic and/or static loads in an open position and/or a closed position of the drawer pull-out guide, a service life of the rail can be increased by locating the at least one embossing in the end area.

Provision is particularly preferably made for the metal sheet to have a material thickness in the range of 0.5 mm and 1.5 mm, preferably 0.6 mm and 0.8 mm.

In the prior art, such low material thicknesses are associated with significant losses in performance and/or service life losses when the rail is in operation. According to the invention, however, small material thicknesses can also be used for rails with high load requirements or heavy, movable furniture parts.

It has proven to be favorable that at least one group of exactly three embossings is used to stiffen the profile at least in certain areas is arranged on at least two essentially orthogonally arranged side faces of the at least one cabinet rail and/or the at least one drawer rail.

It has proven to be advantageous if one group is arranged on one end area of the rail and another group is arranged on another end area of the rail, with the group generally also being able to be formed from two or more embossings.

Furthermore, it is preferably provided that the at least two embossings are arranged on the same side surface or extending over at least two side surfaces on the same side surfaces and/or alternately on the at least two side surfaces, it being preferably provided that the at least two embossings are arranged in a transition region the at least two side surfaces are arranged alternately relative to the inner area and the outer area.

For example, embossings can be arranged on a side surface, which are oriented alternately in the interior and exterior. Alternatively or in addition, one of the embossings can extend over two side faces and/or an alternating arrangement of the embossings relative to the side faces can be provided, with two embossings arranged next to one another being oriented essentially orthogonally to one another.

In a further embodiment of the invention, it can be provided that at least, preferably in the case of groups that may be present, exactly two embossings point in the direction of the inner region of the at least one cabinet rail and/or the at least one drawer rail and one embossing is arranged centrally between the at least two embossings and points in the direction of the outer area of the at least one cabinet rail and/or the at least one drawer rail to increase a tensile/compressive load capacity.

With an increasing number of embossings, the rail’s tensile/compressive load capacity is successively increased, with a rail through withstands particularly high forces without plastic and/or improper elastic deformation by means of alternating embossing and, in particular, by means of an embossing oriented in the middle between two embossings in opposite directions (inside or outside). In addition, the at least one embossing can serve as a support when assembling the drawer pull-out guide.

According to an advantageous embodiment of the invention, it is provided that the at least one embossing is pyramid-shaped or truncated pyramid-shaped, at least in the area of a side surface of the profile, it being preferably provided that the at least one embossing comprises three essentially planar embossing surfaces and/or two embossing surfaces have a pointed one include angles, particularly preferably between 10° and 15°.

A widening of the at least one embossing in the direction of a transition area of side surfaces uses the fact that maximum loads that occur in conventional operation of a rail are present in the transition area, with an embossing widened in the transition area being able to compensate force peaks particularly favorably. Particularly preferably, the at least one embossing extends into the transition area and/or across the transition area over an adjacent side surface.

According to an advantageous embodiment of the invention, it is provided that the at least one embossing extends in the orthogonal direction relative to the longitudinal direction of the at least one cabinet rail and/or the at least one drawer rail over an area between one third and three quarters of the side surface and/or over one Area less than a third, preferably a quarter, of a side surface adjacent to this side surface extends.

In general, the at least one embossing can extend in a direction orthogonal to the longitudinal direction over an entire side surface, due to lower stresses such a constructive design is generally not necessary on free longitudinal edges.

It is advantageously provided that at least two alternating embossings are provided and at least one of the at least two alternating embossings extends in the orthogonal direction relative to the longitudinal direction over an area between one third and three quarters of the side surface and over an area less than one third , preferably a quarter, of a side surface adjoining this side surface and at least one further of the at least two alternately arranged embossings extends in the orthogonal direction relative to the longitudinal direction over an area of less than a third, preferably a quarter, of the side surface and over an area of at least three quarters of the side surface adjacent to this side surface.

By arranging the embossings in an alternating manner in relation to the side faces (not in relation to the inner area of the rail), an expansion of the individual embossings in relation to one side face can be reduced, since both side faces are reinforced by embossings. This can increase an aesthetic appearance and/or reduce manufacturing costs. The embossings particularly preferably end in a transition area of the side surfaces.

At least one of the alternatingly arranged embossings preferably extends essentially over an entire side surface, with at least one further embossing preferably extending only in regions over a side surface.

It has proven to be favorable that the at least one embossing essentially extends over an entire longitudinal extent of the at least two side surfaces oriented orthogonally to the longitudinal direction and/or the at least one embossing comprises two embossing surfaces arranged parallel to one another. As a result, a stiffening of the profile can be generated, which has an advantageous effect over four side surfaces of the profile.

According to an advantageous embodiment of the invention, it is provided that the profile comprises a gradation on at least one side face, with the at least one embossing extending beyond the gradation of the profile.

The at least one gradation generates an additional stiffening in the profile, in which case, for example, one fastening side can be brought to rest against a furniture part particularly advantageously over a large area and/or a fastening surface in the region of fastening means can be spaced apart from the furniture part for secure positioning on a furniture part.

An advantageous variant consists in the at least one cabinet rail and/or the at least one drawer rail having at least one fastening section with a fastening side which can be brought into contact with the furniture carcass or at least one furniture part at least in sections during assembly on the furniture carcass or at least one furniture part is, wherein the at least one fastening section has at least one, preferably circular, opening for the passage of a fastener, preferably a screw, wherein the at least one opening on one of the fastening side through a material thickness of the fastening section, preferably between 0.5 mm and 1.5 mm, particularly preferably between 0.6 mm and 0.8 mm, the second side is surrounded by a bead which projects transversely from the second side.

In other words, the opening on the side of the fastening section facing a screw head is surrounded by a preferably annular bead, which is provided for at least partially receiving the screw head. The screw head can therefore be countersunk at least partially, preferably essentially completely, within the bead. The bead also reinforces the perimeter of the opening, ie the force from the underside of the screw head can be distributed over a larger area. The sinking of the screw head into the thin-walled metal of the fastening section can be reduced by the bead. The risk of damaging the peripheral edge of the opening can therefore be reduced in this way.

If the bead is produced in the form of an embossing, for example, then a corresponding recess is formed on the fastening side of the fastening section, in which the chip material emerging from the furniture part can be at least partially accommodated. This also reduces the risk of the chip material penetrating between the fastening side of the fastening section and the furniture part and thus leading to an undesired spacing of the fastening section from the furniture part.

It is particularly preferred that the at least one cabinet rail and/or the at least one drawer rail has at least two substantially orthogonally arranged side surfaces, with the at least two embossings being arranged on the side surfaces in such a way that the at least two embossings adjoin one another in the longitudinal direction and/or the same side surface or the same side surfaces and/or are arranged alternately on the at least two side surfaces and/or alternately in a transition region of the at least two side surfaces.

If, for example, in a transition area of the at least two side surfaces, the embossings are arranged alternately in the direction of the inner area and the outer area of the rail, a particularly reinforced longitudinal edge is required, with the reinforcement in the direction of the adjacent longitudinal edges over the side surfaces in orthogonal direction acts on the longitudinal direction and/or in the longitudinal direction.

Further details and advantages of the present invention are explained in more detail below on the basis of the description of the figures with reference to the exemplary embodiments illustrated in the drawings. Show in it:

1a-1b a drawer pull-out guide according to a particularly preferred embodiment in a front view with a carriage arranged between a cabinet rail and a drawer rail and without the carriage,

2a-2b the drawer pull-out guide according to the embodiment according to FIG. 1b in a perspective view,

3a-3b the drawer pull-out guide according to the exemplary embodiment according to FIG. 1b in a perspective view,

Fig. 4a-4c a drawer rail according to a particularly preferred

Example of a drawer pull-out guide in a perspective view and a top view with a sectional view,

5a-5b the shutter rail according to the embodiment of FIG. 4a in a perspective view with an enlarged detail of an end area of the profile and a view from the front,

6a-6b a cabinet rail according to a particularly preferred embodiment of a drawer pull-out guide in a perspective view with an enlarged one

Detail section of an end area of the profile,

7a-7b shows the cabinet rail according to the exemplary embodiment according to FIG. 6a in a perspective view and a view from the side with a sectional view and an enlarged detail of the cross section,

8a-8b show the cabinet rail according to the embodiment of FIG. 6a in a side view and two orthogonal side views with a sectional view and an enlarged detail, 9a-9b show the cabinet rail according to the embodiment of FIG. 6a in two side views and a sectional view of the profile,

10 shows the carcass rail according to the exemplary embodiment according to FIG. 6a in a perspective view with an enlarged detail of a stiffening device and a fold,

11a-11b shows the body rail according to the exemplary embodiment according to FIG. 6a in two side views with an enlarged detail of the stiffening device, FIG.

Fig. 1 shows a drawer pull-out guide 1 for movably mounting a drawer on a furniture body (the furniture parts are not visible in the illustrations for reasons of clarity), comprising as rails a body rail 2 to be fastened to the furniture body and a drawer rail 3 to be connected to the drawer, which is mounted displaceably relative to the carcass rail 2 in a longitudinal direction 4 . In general, a middle rail can also be arranged between the body rail 2 and the drawer rail 3, although this is not absolutely necessary.

A carriage 13 with rolling elements 14 - the carriage 13 can alternatively or additionally generally also comprise sliding bodies - is arranged on the body rail 2 and the drawer rail 3 of the drawer pull-out guide 1.

The body rail 2 and the drawer rail 3 have a profile 9 in a cross section 5 normal to the longitudinal direction 4 formed from a flat sheet metal 6 with two longitudinal edges 7 running parallel to one another.

On the drawer rail 3 is arranged over two mutually orthogonal side surfaces 8 of the profile 9 extending embossing 10 for stiffening the profile 9 of the drawer rail 3, the side surfaces 8 in the longitudinal direction 4 and the embossing 10 orthogonal are arranged on the longitudinal direction 4. Such an embossing 10 can generally also be arranged on the carcass rail 2 .

The embossing 10 of the drawer rail 3 and the embossing 10 of the body rail (see Fig. 2a) are arranged on the drawer pull-out guide 1 in such a way that the embossing 10 can be passed through the carriage 13 and the rolling elements 14 without contact in the longitudinal direction 4.

FIG. 1b differs from FIG. 1a only in that the carriage 13 has been removed for the purposes of illustration; this is generally arranged on the drawer slide 1 .

The sheet metal 6 of the body rail 2 and the drawer rail 3 has a material thickness 16 in the range of 0.7 mm, the embossing 10 generating increased stability of the drawer pull-out guide 1 .

2a shows the drawer pull-out guide 1 from a different perspective, with the drawer rail 3 being moved in the longitudinal direction 4, starting from a closed position in the direction of the open position of a movable furniture part.

The carcass rail 2 has two groups 21 each consisting of three embossings 10 for stiffening the profile 9, which are arranged on two orthogonally arranged side surfaces 8 of the carcass rail 2. The number of groups 21 and number of embossings 10 per group is generally arbitrary. The groups 21 are spatially spaced apart from one another in the longitudinal direction 4 and are arranged on an end region 23 of the carcass rail 2 .

2b shows the drawer pull-out guide 1 in a different viewing direction, it being evident that the three embossings 10 of a group 21 are arranged on two adjacent side surfaces 8 which are oriented orthogonally to one another. Such embossings 10 can generally also be arranged on the drawer rail 3 . The embossings 10 of a side surface 8 extend into a transition area 22 and protrude into the adjoining side surface 8 , with the embossings 10 generally also being able to end in the transition area 22 before entering the adjoining side area 8 .

Two embossings 10 of a group 21 are arranged on the same side face 8, with the three embossings 10 of group 21 being arranged alternately on the two side faces 8, so that the embossings 10 in the transition area 22 of the at least two side faces 8 and the side face 8 alternately relative to the inner area 11 and the outer area 12 are arranged. The embossings of a group 21 adjoin one another in the longitudinal direction 4 .

3a and 3b show in associated perspective representations of the drawer pull-out guide that the profile 9 of the cabinet rail 2 and the drawer rail 3 each have a fold 15 with twice the material thickness 16 of the sheet metal 6 on two longitudinal edges 7 (see FIG. 1b).

A side surface 8 of the profile 9 of the cabinet rail 2 and a side surface 8 of the profile 9 of the drawer rail 3, on which a fold 15 is arranged, is used in the form of a track 17 for the linear movement of the carriage 13 along the longitudinal direction 4, with generally also only the cabinet rail 2 or the drawer rail 3 can have a folded track 17 . The rolling bodies 14 can be moved in sections in the longitudinal direction 4 along the folds 15 .

4a shows the drawer rail 3 of the drawer pull-out guide in isolation, with a fold 15 pointing in the direction of the inner area 11 and another fold 15 in the direction of the outer area 12 of the drawer rail 3. The embossing 10 is arranged on side surfaces 8 of the drawer rail 3 on which no fold 15 is arranged.

Fig. 4b differs from Fig. 4a only by a different viewing direction of the drawer rail 3. 4c shows the end region 23 of the drawer rail 3 with a sectional view through the embossing 10, with a stop 20 being arranged in some areas on two orthogonally arranged side surfaces 8 of the drawer rail 3. The stop 20 is punched out of the profile 9 so as to protrude in the direction of the inner region 11 of the drawer rail 3 and is materially connected to the two side surfaces 8 . The stop 20 is arranged on a side surface 8 on which a fold 15 is arranged and on a side surface 8 on which no fold 15 is arranged.

The embossing 10 extends over an entire longitudinal extent 26 of the side surfaces 8, which is oriented orthogonally to the longitudinal direction 4, and the embossing 10 comprises two embossing surfaces 24 arranged parallel to one another.

5a shows the drawer rail 3, it being evident in the enlarged detail section that the stop 20 is arranged parallel to the embossing 10 with a lateral offset. The stop 20 extends in the orthogonal direction to the longitudinal direction 4 over a longitudinal edge 7 and the embossing 10 over a further longitudinal edge 7 of the drawer rail 3. The stop and the embossing 10 are arranged overlapping on a side surface 8, although this is not absolutely necessary .

The embossing 10 is arranged in the end area 23 of the drawer rail 3 in relation to the longitudinal direction 4 , the stop 20 being arranged between the end area 23 and the embossing 10 .

5b shows the drawer rail 3 from the front, with the carriage 13 being able to be arranged in the interior area 11 in certain areas.

Fig. 6a shows the body rail 2 of the drawer pull-out guide 1 isolated, with a fold 21 being arranged on each of two longitudinal edges 7 of the profile 9 and an embossing 10 being arranged on a side surface 8 with a folded longitudinal edge 7 and a further embossing 10 on a side surface 8 is arranged without a folded longitudinal edge 7. A fold 15 of the carcass rail 2 has two stiffening devices 18 that are spatially spaced apart from one another in the longitudinal direction 4 and have twice the material thickness 16 of the sheet metal 6 , with both stiffening devices 18 being punched and projecting transversely from the fold 15 . A stiffening device 18 includes a bend 19 and is arranged in regions parallel to the fold 15 , the further stiffening device 18 being arranged orthogonally to the fold 15 . The stiffening devices 18 generate a profile fidelity by inhibiting a gaping of the profile 9 and can act connection to a furniture part.

6b shows that the embossings 10 of the carcass rail 2 in the area of a side surface 8 of the profile 9 are pyramid-shaped with roundings between embossing surfaces 24 caused by production technology. The embossings 10 comprise three planar embossing surfaces 24, with two embossing surfaces 24 each enclosing an acute angle 25 of 12°, with the angle 25 also being able to be larger or smaller in order to maintain the functionality of the embossing 10.

Fig. 7a shows that on the carcass rail 2, per group 21 of the two groups 21, two embossings 10 point in the direction of the inner area 11 of the carcass rail 2 and one embossing 10 is arranged centrally between the two embossings 10 and in the direction of the outer area 12 of the carcass rail 2 has to increase a tensile / compressive strength.

7b shows in the sectional view through an embossing 10 that embossings 10 extend in the orthogonal direction relative to the longitudinal direction 4 of the carcass rail 2 over an area of between one third and three quarters of the side surface 8 and/or over an area of less than a quarter of a extends to this side surface 8 adjacent side surface 8. That embossing 10 which points to the outer area 12 of the carcass rail 12, however, extends over the entire side surface 8 and ends in both Transition areas 22 in relation to the adjacent side surfaces 8.

8a shows the embossings 10 of the carcass rail, which point alternately inwards and outwards, in a side view.

8b shows that the profile 9 of the carcass rail 2 comprises a gradation 27 on a side face 8, embossings 10 extending over the gradation 27 of the profile 9. FIG.

9a and 9b show that the carcass rail 2 has a fastening section 28 with a fastening side 29 which, when mounted on the furniture carcass or a furniture part, can be brought into abutment in sections on the furniture carcass or the furniture part. The fastening section 28 comprises a multiplicity of circular openings 30 for the passage of a fastening means 31--for example in the form of a screw (cf. FIG. 2b). The openings 30 are surrounded on one of the fastening side 29 by a material thickness 16 of the fastening section 28 - which can generally differ locally from a material thickness 16 of the metal sheet 6 - from a second side 32 spaced 0.7 mm apart by a bead 33 . The beads 33 project transversely from the second side 32 .

FIG. 10 shows in the detailed section that the stiffening devices 18 penetrate twice the material thickness 16 of the fold 15 .

11a and 11b show the embossments 10 of the body rail in two orthogonal views from the side, wherein embossments 10 extend in the orthogonal direction relative to the longitudinal direction 4 over an area between one third and three quarters of the side surface 8 and over an area less than a quarter of a side surface 8 adjoining this side surface 8 and separate embossings 10 extend therefrom in the orthogonal direction relative to the longitudinal direction 4 over an area of less than a third quarter of the side surface 8 and over an area of more than three quarters the side surface 8 adjoining this side surface 8 and extends into the transition area 22 .

Fig. 12 shows a sheet metal 6 before the introduction of embossing 10 and a bending process. In general, the embossings 10 can be introduced after a bending process, with the embossings 10 particularly preferably being introduced into the metal sheet 6 before the bending process.

A method for producing a drawer pull-out guide 1 using the example of the drawer rail 3 according to Fig. 5b can be carried out as follows: the flat, sheet steel 6 with a longitudinal direction 4 and two cover surfaces 34 is provided as a semi-finished product for the drawer rail 3, the sheet metal 6 is stamped with an embossing die 35 or an embossing roller 36 is provided with an embossing 10 on a top surface 34, the embossing 10 being arranged orthogonally to the longitudinal direction 4, the metal sheet 6 being bent so that a profile 9 of the drawer rail 3 is created in a cross section 5 orthogonal to the longitudinal direction 4 and the embossing 10 extends over two mutually orthogonal side surfaces 8 of the profile 9 to reinforce the profile 9.

A method for producing a drawer pull-out guide using the example of a carcass rail 2 according to Fig. 6a can be carried out as follows: the flat sheet steel 6 with the longitudinal direction 4 and the two cover surfaces 34 is provided as a semi-finished product for the carcass rail 2, the sheet metal 6 is stamped by the embossing die 35 and the embossing roller 36 (preferably two embossing stamps 35 or two embossing rollers 36 being provided) is provided with an embossing 10 on each of the two top surfaces 34, the embossings 10 being arranged orthogonally to the longitudinal direction 4, the metal sheet 6 is bent so that a profile 9 of the carcass rail 2 is formed in a cross section 5 orthogonal to the longitudinal direction 4 and the at least two embossings 10 point alternately in the direction of the inner region 11 and in the direction of the outer region 12 of the carcass rail 2.

Claims

patent claims

1. Drawer pull-out guide (1) for movably mounting a drawer on a furniture body, comprising at least one body rail (2) to be fastened to the furniture body and at least one drawer rail (3) to be connected to the drawer, which relative to the at least one body rail (2) is slidably mounted in a longitudinal direction (4), and optionally a center rail arranged between the at least one cabinet rail (2) and the at least one drawer rail (3), wherein at least one of the rails, preferably the at least one cabinet rail (2), contains the at least one Drawer rail (2) and/or the at least one center rail that may be present, in a cross section (5) normal to the longitudinal direction (4), at least one profile (9 ) has, characterized in that at least one is at least partially over at least two essentially embossing (10) extending orthogonally to one another to reinforce the profile (9) of the profile (9), the side surfaces (8) being arranged in the longitudinal direction (4) and the at least one embossing (10) is arranged essentially orthogonally to the longitudinal direction (4), wherein the at least one embossing (10) points in the direction of an outer area (12) of the at least one rail and/or the at least one rail is in the form of the drawer rail (3), and/ or at least two embossings (10), preferably at least in regions, arranged on at least two side faces (8) that are oriented substantially orthogonally to one another and/or are adjacent and/or extend over at least two side faces (8), are provided, wherein the at least two embossings (10) point alternately in the direction of an inner area (11) and in the direction of an outer area (12) of the at least one rail, in particular the at least two embossings (10) adjoining one another in the longitudinal direction (4).

2. Drawer pull-out guide (1) according to claim 1, wherein at least one carriage (13) with at least one rolling element (14) and/or sliding body is or can be arranged on the drawer pull-out guide (1), the at least one embossing (10) being on the at least one cabinet rail (2) and/or the at least one drawer rail (3) is arranged such that the at least one embossing (10) in the longitudinal direction (4) is contactless by the at least one carriage (13) and/or the at least one rolling element (14 ) and/or sliding body is passable.

3. drawer slide (1) according to claim 1 or 2, wherein the

Profile (9) of the at least one cabinet rail (2) and/or the at least one drawer rail (3) on at least one longitudinal edge (7), preferably on two longitudinal edges (7), at least one fold (15) with at least twice the material thickness (16 ) of the metal sheet (6).

4. Drawer pull-out guide (1) according to claim 2 and 3, wherein at least one side surface (8) of the profile (9), on which at least one fold (15) is arranged, in the form of a track (17) for the linear movement of the at least one carriage (13) along the longitudinal direction (4), it being preferably provided that the at least one rolling body (14) and/or sliding body can be moved at least in sections in the longitudinal direction (4) along the at least one fold (15).

5. drawer slide (1) according to claim 3, wherein at two

Longitudinal edges (7) of the profile (9) are each arranged a fold (21) and an embossing (10) is arranged on a side surface (8) with a folded longitudinal edge (7) and another Stamping (10) is arranged on a side surface (8) without a folded longitudinal edge (7).

6. Drawer slide (1) according to any of the preceding

Claims, wherein at least one fold (15) in the direction of

Inner area (11) and at least one further fold (15) in

towards the outer area (12) of the at least one cabinet rail (2) and/or the at least one drawer rail (3), it being preferably provided that the at least one embossing (10) on side surfaces (8) of the at least one cabinet rail (2) and/or the at least one drawer rail (3) is arranged on which no fold (15) is arranged.

7. Drawer pull-out guide (1) according to claim 4, wherein the at least one fold (15) has at least one, preferably exactly two, spatially spaced apart from one another in the longitudinal direction (4) and/or a stiffening device ( 18) includes, it being preferably provided that the at least one

stiffening device (18) and/or protrudes transversely from the at least one fold (15) and/or comprises a bend (19) and/or is arranged parallel to the at least one fold (15) at least in regions and/or orthogonally at least in regions is arranged to the at least one fold (15).

8. Drawer pull-out guide (1) according to one of the preceding claims, wherein at least one stop (20) is arranged at least in regions on at least two substantially orthogonally arranged side surfaces (8) of the at least one cabinet rail (2) and/or the at least one drawer rail (3). is, it being preferably provided that the at least one stop (20) in the direction of the inner region (11) of the at least one carcass rail (2) and / or the at least one Drawer rail (3) is punched protruding from the profile (9) and/or is materially connected to the two side surfaces (8) and/or is arranged on a side surface (8) on which a fold (15) is optionally arranged and on a side surface (8) is arranged on which optionally no fold (15) is arranged.

9. Drawer pull-out guide (1) according to claim 8, wherein the at least one stop (20) is arranged parallel with a lateral offset to the at least one embossing (10), it being preferably provided that the at least one stop (20) is orthogonal towards the longitudinal direction (4) over a longitudinal edge (7) and the at least one embossing (10) over a further longitudinal edge (7) of the at least one cabinet rail (2) and/or the at least one drawer rail (3).

10. Drawer pull-out guide (1) according to claim 9, wherein the at least one embossing (10) is arranged in an end region (23) of the at least one cabinet rail (2) and/or the at least one drawer rail (3) in relation to the longitudinal direction (4). , the at least one stop (20) being optionally arranged between the end region (23) and the at least one embossing (10).

11. Drawer pull-out guide (1) according to one of the preceding claims, wherein the metal sheet (6) has a material thickness (16) in the range of 0.5 mm and 1.5 mm, preferably 0.6 mm and 0.8 mm.

12. Drawer pull-out guide (1) according to one of the preceding claims, wherein at least one group (21) of exactly three embossings (10) for stiffening the profile (9) at least in regions on at least two substantially orthogonally arranged side surfaces (8) of the at least one carcass rail (2) and/or the at least one drawer rail (3) is arranged.

13. Drawer pull-out guide (1) according to one of the preceding claims, wherein the at least two embossings (10) on the same side surface (8) or extending over at least two side surfaces (8) on the same side surfaces (8) and/or alternating on the at least two side surfaces (8) are arranged, it being preferably provided that the at least two embossings (10) are arranged alternately in a transition area (22) of the at least two side surfaces (8) relative to the inner area (11) and the outer area (12). are.

14. Drawer pull-out guide (1) according to one of the preceding claims, wherein at least, preferably with any groups (21) present, there are exactly two embossings (10) in the direction of the inner region (11) of the at least one cabinet rail (2) and/or the at least one drawer rails (3) and an embossing (10) is arranged centrally between the at least two embossings (10) and in the direction of the outer region (12) of the at least one body rail (2) and/or the at least one drawer rail (3) to raise a Tensile/compressive strength.

15. Drawer pull-out guide (1) according to one of the preceding claims, wherein the at least one embossing (10) is configured in the shape of a pyramid or truncated pyramid at least in the region of a side surface (8) of the profile (9), it being preferably provided that the at least one embossing ( 10) comprises three essentially flat embossing surfaces (24) and/or two embossing surfaces (24) enclose an acute angle (25), particularly preferably between 10° and 15°.

16. Drawer pull-out guide (1) according to any one of the preceding claims, wherein the at least one embossing (10) in the orthogonal direction relative to the longitudinal direction (4) of the at least one body rail (2) and / or the at least one Drawer rail (3) extends over an area of between one third and three quarters of the side surface (8) and/or over an area of less than one third, preferably one quarter, of a side surface (8) adjoining this side surface (8).

17. Drawer slide (1) according to any one of the preceding

Claims, wherein at least two alternately arranged

embossings (10) are provided and wherein at least one of the at least two alternately arranged embossings (10) extends in the orthogonal direction relative to the longitudinal direction (4) over an area between one third and three quarters of the side surface (8) and over an area smaller a third, preferably a quarter, of a side surface (8) adjoining this side surface (8) and at least one further of the at least two alternately arranged embossings (10) extends in the orthogonal direction relative to the longitudinal direction (4) over an area of less than one third , preferably a quarter, of the side surface (8) and extends over a region of at least three quarters of the side surface (8) adjoining the side surface (8).

18. Drawer pull-out guide (1) according to one of the preceding claims, wherein the at least one embossing (10) extends essentially over an entire longitudinal extension (26) of the at least two side surfaces (8) oriented orthogonally to the longitudinal direction (4) and/or the at least one embossing (10) comprises two embossing surfaces (24) arranged parallel to one another.

19. Drawer pull-out guide (1) according to one of the preceding claims, wherein the profile (9) comprises a gradation (27) on at least one side surface (8), the at least one embossing (10) extending over the gradation (27) of the profile ( 9) extends across.

20. Drawer pull-out guide (1) according to one of the preceding claims, wherein the at least one cabinet rail (2) and/or the at least one drawer rail (3) has at least one fastening section (28) with a fastening side (29) which, when mounted on the The furniture body or at least one furniture part can be brought to rest at least in sections on the furniture body or the at least one furniture part, the at least one fastening section (28) having at least one, preferably circular, opening (30) for the passage of a fastening means (31), preferably a screw, has, wherein the at least one opening (30) on one of the fastening sides (29) through a material thickness (16) of the fastening section (28), preferably between 0.5 mm and 1.5 mm, particularly preferably between 0.6 mm and 0 .8 mm, spaced second side (32) is surrounded by a bead (33) which projects transversely from the second side (32).

21. A method of making at least one

Drawer slide (1) according to any of the preceding

Claims, characterized by the method steps: a flat, preferably metallic, particularly preferably steel, sheet metal (6) with a longitudinal direction (4) and two cover surfaces (34) is used as a semi-finished product of the at least one rail, preferably the at least one body rail (2) , the at least one drawer rail (3) and/or the at least one center rail that may be present, the metal sheet (6) is provided, preferably by at least one embossing stamp (35) and/or at least one embossing roller (36), on at least one top surface ( 34) provided with at least one embossing (10), wherein the at least one embossing (10) is arranged essentially orthogonally to the longitudinal direction (4), the metal sheet (6) is bent so that in a cross section (5) orthogonal to the longitudinal direction (4) a profile (9) of at least one rail is formed and the at least an embossing (10) at least in regions over two substantially orthogonal to each other arranged

Side faces (8) of the profile (9) to reinforce the profile (9), the at least one embossing (10) pointing in the direction of an outer region (12) of the at least one rail.

22. A method of making at least one

Drawer slide (1) according to any of the preceding

Claims, characterized by the method steps: a flat, preferably metallic, particularly preferably steel, sheet metal (6) with a longitudinal direction (4) and two cover surfaces (34) is used as a semi-finished product of the at least one rail, preferably the at least one body rail (2) , the at least one drawer rail (3) and/or the at least one center rail that may be present, the metal sheet (6) is stamped, preferably by at least one embossing stamp (35) and/or at least one embossing roller (36), on both top surfaces (34 ) provided with at least one embossing (10), wherein the at least one embossing (10) is arranged essentially orthogonally to the longitudinal direction (4), the sheet metal (6) is bent so that in a cross section (5) orthogonal to the longitudinal direction ( 4) a profile (9) of at least one rail is created and the at least two embossings (10) alternate in the direction of an inner area (11) and in the direction of an outer area (12) of the z show at least one rail.

23. The method according to claim 22, wherein the at least one body rail (2) and/or the at least one drawer rail (3) has at least two substantially orthogonally arranged side surfaces (8), the at least two embossings (10) being formed on the side surfaces ( 8) are arranged so that the at least two embossings (10) adjoin one another in the longitudinal direction (4) and/or on the same side surface (8) or the same side surfaces (8) and/or alternately on the at least two side surfaces (8) and/or - in a transition area (22) of the at least two

Side surfaces (8) are arranged alternately.