ES2443295T3 - Extraction Guide - Google Patents

Abstract

Extraction guide, especially for furniture, with at least two movable rails relatively one with another, which by means of a large number of rolling bodies are supported against each other, with a strip-shaped profile (1, 1 ', 1' ', 1 being provided '' ', 1' '' ') which is formed from a curved metal band, which represents a central area that is arranged between side edge sections (6, 10), bending sections (2, 4 being provided on the metal band) , 5, 6, 8, 9, 10, 14, 15) for the configuration of at least one raceway (25) for rolling bodies, and at least one edge section (6, 10) of the metal band is fixed in a adjacent section (2) of the metal band, the at least one edge section (6, 10) and the adjacent section (2) being at least in areas joined together with material coupling, characterized in that the profile (1, 1 ', 1' ', 1' '' ') in the folded sections presents in cross section at least one zo Na in the form of a cross (3, 7), in which two lateral nerves (4, 14, 8, 15) and two vertical nerves (2, 5, 6, 9, 10) are provided, being provided in a vertical nerve ( 2, 6, 10) Sections located together with material coupling.

Description

Extraction Guide

The present invention relates to an extraction guide according to the preamble of claim 1.

There are strip-shaped profiles for extraction guides, which configure raceways for rolling bodies and

5 have a curved or folded structure. Due to the compact geometry there is only a certain stability, especially in the lateral direction. In case the lateral stability of such a profile must be increased, the geometry of the profile can be modified, which however enlarges the construction space. In this, a material thickness for the profile in the form of a strip must be used to ensure sufficient lateral stability. In addition, in longer strip-shaped profiles, a decrease in utilization should be reduced.

10 Document BE 443 576 discloses a slide guide, in which a rail is manufactured from a curved metal plate. In a loop-shaped section of the curved sheet metal an edge is welded with another section of the rail.

Also EP 1 277 422 discloses a rail of a slide guide, in which edge sections of a curved metal sheet are placed in a central section and are welded there.

15 It is therefore the problem of the present invention to provide a profile for an extraction guide, which has high stability and can be effectively manufactured.

This problem is solved with an extraction guide with the characteristics of claim 1.

According to the invention in the strip-shaped profile at least one edge section of the metal band is fixed in an adjacent section of the metal band. This increases the stiffness of the profile in the form of a strip, since the edge section and the adjacent section can no longer move relative to each other. This especially affects the case of a torsional stress, in which a loose situation with one another of an edge section would cause displacement, which is prevented by the non-loosening of the edge section. In this way the deformation of the profile in the form of a strip is smaller and higher loads can be absorbed. It is also possible to reduce the thickness of the profile material in the form of a strip, so that with the same rigidity, it will save material costs and

25 decrease dough.

The at least one edge section and the at least one of the adjacent sections are at least in areas connected to each other with material coupling and can no longer loosen from one another. The joining area can thus absorb loads and increase the stiffness of the profile.

According to a preferred configuration of the invention the at least one edge section is glued in areas with each other with

30 the adjacent section. A similar bonding of the sections placed together can be integrated in an especially effective way in the manufacturing process. Alternatively or additionally the sections may also be welded in areas with each other. Also, a joint with material coupling of the adjacent sections can be obtained.

In another configuration of the invention the at least one edge section and the adjacent section are fixed at least by 35 zones per forming.

According to the invention, the cross-sectional profile has at least one cross-shaped area, in which two lateral ribs and two vertical ribs are provided, the joined sections with material coupling located together being provided in a vertical rib.

Preferably a singing area is configured as a joined section with material coupling, since thus

40 a large stability elevation can be achieved. It is also possible to join the two edge areas of a metal band together with material coupling, to increase torsional stiffness.

In another configuration of the invention an extraction guide is provided, especially for furniture, in which at least two movable rails are provided relative to each other, which by means of a large number of rolling bodies are supported against each other. One of these rails is configured as a strip-shaped profile according to

45 the invention. Preferably this strip-shaped profile is configured as the central rail of an extraction guide with three rails. Precisely the central rail must partially absorb lateral loads or torsion loads, so that the reinforcement of the central profile has a particularly advantageous effect.

In a process for manufacturing a profile in the form of a strip first a metal strip of a coil is unwound and then transported along a bending station with a large number of bending devices, preferably rollers, to manufacture a cross section curved or folded in a central area of the metal band for the configuration of raceways for rolling bodies. Next at least one edge section of the metal band is fixed in an adjacent section of the metal band with a non-loosening joint and the band

Metal is cut into profiles in the form of a strip. This allows a particularly effective manufacturing of the profile in the form of a strip, which can be produced in a continuous step process, and existing installations can be used that are completed with a bonding station, welding station and / or forming station. In this way the manufacturing cycle time is not lengthened or only insignificantly, so that the advantages predominate

5 mechanics by reinforcing the profile.

According to a preferred configuration of the process, an application in the form of an adhesive line is carried out for fixing an edge section of the metal strip, so that the suitable glue application devices can be mounted in the bending station. It is also possible to apply the adhesive in strips or spaced points, so precisely in the area of the cutting edge for the profile not to find any remaining glue.

10 It is also sufficient that the coupling with material coupling is also carried out in sections. Instead of gluing the edge section, it can also be welded or shaped for fixing.

In another configuration of the invention the bonded metal band and / or a strip-shaped profile are welded even after gluing. In this it is convenient that in the welding of the profile the glued sections are fixed before the hardening of the adhesive. Most of the times the cycle times in the manufacture of the profiles are kept very short, so that during the transport of the metal band the adhesive is not yet hardened, and it cannot develop any suitable short-term adherent effect. For these cases it is convenient that by welding, preferably by spot or strip welding, a fixation of the glued sections of the profile is obtained. In order to avoid a warping of the profile by welding on one side, compensation welding or other measures can be provided on the opposite side of the profile. In this way the hardening of the glue can also be carried out even more.

20 late, since a deformation of the profile should only be expected upon request in an assembled state, for example in an extraction guide.

The invention is explained in detail below with the help of several embodiments with reference to the attached drawings. They show:

Figure 1A and 1B two views of a strip-shaped profile during manufacturing;

Figures 2A and 2B two views of the profile of Figure 1 on the glue;

Figure 3 a perspective view of the profile of Figure 2A after termination;

Figure 4 a perspective view of the profile of Figure 2A, 2B after termination in a modified configuration;

Figure 5 a perspective view of a modified profile during manufacturing;

Figure 6 a view of the modified profile of Figure 5 after termination;

Figure 7 a view of a modified profile after termination, and

Figures 8A to 8D show various views of another embodiment of a profile in the form of a strip.

In Figures 1A and 1B a profile 1 is shown in the form of a strip, which is composed of a metal sheet and for example from a metal band by numerous bends it was taken to the form shown. Profile 1

35 comprises a flat central section 2, in which a cross-shaped zone 3 or 7 on the end side is respectively configured at opposite ends.

The area on the end side 3 has a lateral rib 4 formed integral with the central section 2, to which a vertical rib 5 is attached, which joins a prominent curved edge section 6. The edge section 6 is configured of a edge edge of the metal band.

On the opposite side of the central section 2, a cross-shaped zone 7 is also configured on the end side, which has a lateral rib 8 and a vertical rib 9 as well as an edge section 10 protruding from the central section 2 .

In the central section 2 a support surface 13 is configured, on which two strips of adhesive 11 and 12 are applied, which run parallel to the longitudinal axis of the profile 1. The strip of adhesive 11 must be used for bonding the

45 edge section 6 still to be folded, which must rest on the inner surface 16 against the surface 13 of the central section 2. Similarly, the lower edge section 10 must rest with an inner surface 17 on the surface 13 of the section central 2.

As shown in Figures 2A and 2B, by means of another bending of the edge section 6 in the cross-shaped area 3 a lateral rib 14 was formed, which is formed in an image reflected in the mirror with respect to the lateral rib 4, 50 the edge section 6 now resting on the central rib 2 and stuck there. In the lower zone due to deformation of the edge section 10, a lateral rib 15 has been configured, which is arranged in an image reflected in the mirror with

with respect to the lateral rib 8. The edge section 10 was deformed in the area of an extreme section and glued with the central section 2, so that the inner surface 17 is connected with material coupling with the central section 2 by the strip of adhesive 12. Between the front edges 21 and 22 of the edge sections 6 and 10 a slot 18 is configured. The slot 18 is arranged approximately centered between the cross-shaped areas 3 and 7, but can

5 also be arranged outside the center adjacent to one of zones 3 or 7.

The two cross-shaped zones 3 and 7 configure between ribs 2, 4, 5, 14 and 6 as well as 2, 8, 9, 15 and 10 respectively curved raceways 25, in which rolling bodies can roll, in particular balls. Each cross-shaped area 3 and 7 has four raceways 25, it is also possible to occupy only two or three of these raceways 25 with rolling bodies.

10 A profile 1 in the form of a finished strip is shown in Figure 3. The edge sections 6 and 10 have been connected to each other by means of a weld bead 19 in the form of a strip. By means of the weld bead 19, the groove 18 is bridged between the edge sections 6 and 10, in which the weld bead 19 can also extend continuously in the longitudinal direction to the ends of the profile 1.

A modified configuration of a 1 ’profile in the form of a strip is shown in Figure 4, in which instead of

15 a continuous weld bead 19 several welding sections 20 are provided in the form of strips, to join the edge sections 6 and 10 of the profile 1 'with each other. In the exemplary embodiment shown, four welding strips 20 are provided, it being of course also possible to provide more or less welding strips 20. Furthermore, the joining of the edge sections 6 and 10 can also be carried out by means of weld beads in the form of points.

Another possible configuration of a 1 ’profile in the form of a strip is represented in Figure 5. Instead of a contribution

20 in the form of a weld bead line 11 and 12 here only short sections in the form of adhesive strips 11 '' and 12 '' are provided, to glue the edge sections 6 and 10 with the central rib 2 on a surface of support 13. In the exemplary embodiment shown, four strips of adhesive 11 '' and 12 '' are provided in each case, and more or less strips of adhesive 11 '' and 12 '' can of course also be applied.

In Figure 6, the profile 1 ’of Figure 5 has been completed, the edge sections 6 and 10 now being glued together with the

25 central section 2. In addition, the edge sections 6 and 10 were joined together by welding sections 20 in the form of strips. Welding sections 20 and adhesive lines 11 ’and 12’ are arranged alternately. This configuration has the advantage that comparatively little adhesive and solder addition is needed. In addition, during welding, less heat is introduced, so that the load of welding material is lower and a possible warping of the 1 ’profile is avoided or reduced.

30 A modified embodiment of a 1 ’’ profile is shown in Figure 7, in which the edge sections of the sheet metal strip are fixed by forming in the central section 2 ’’. By means of the forming, a circular concavity 30 is formed in the central section 2 '' ', in which shaped end sections 32 are inserted, which in turn form a circular concavity 33. The front edges 21 and 22 rest against each other inside. of the concavity 30. However, a groove can also be configured between the front edges 21 and 22

35 manufacturing tolerances. By forming by means of a punch, 30 ribs 31 in the shape of a rib are formed in the concavity on the side opposite the edge sections. In forming the sections to be joined are compressed by a punch under plastic deformation in a matrix. By means of the configuration of the matrix, a shape similar to a push button is produced, so that the deformed sections are connected to each other with form coupling and forced adjustment.

40 In Figures 8A and 8C a profile 1 '' '' is shown in the form of a strip, which is manufactured from a metal band and has a flat central section 2 '' '' in which at opposite ends it is configured respectively a cross-shaped zone 3 or 7 on the end side, as shown in the exemplary embodiment of Figure 1, so that the same reference signs are used.

Zone 3 on the end side comprises a prominent bent edge section 6 ’’ ’, which is set shorter

45 that in the exemplary embodiment of Figure 1. On the opposite side of the central section 2 '' '' a cross-shaped zone 7 is also configured on the end side, in which a prominent edge section is configured 10 '' ' The 6 ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’borde’ borde ’borde borde borde borde one one, with the front edges 2’ ’’ ’over a certain length, is set up only in one layer. The 6 ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ "

50 8C) or through several sections of 11 ’and 12’ adhesive cords (Figure 8D), and fixing can also be carried out using properly configured welding cords.

The geometry of the strip-shaped profile 1, 1 ', 1' ', 1' '' and 1 '' '' can be modified precisely in the area of cross-shaped areas 3 and 7. Instead of the configuration With four raceways 25, only two or three raceways can be configured so that ribs 4, 5 and 14 as well as 8, 9 and 15 undergo another configuration.

In the process according to the invention for the manufacture of the profile in the form of a strip 1, 1 ', 1' ', 1' '' and 1 '' '' first a metal strip of a coil is unwound and then transported to it along a bending station with a large number of bending devices, preferably rollers, to manufacture a curved or folded cross section in a central area of the metal band for the configuration of raceways for rolling bodies. Then at least one edge section of the metal band is fixed in an adjacent section of the metal band with a non-loosening joint and the metal band is cut into profiles in the form of a 1, 1 ', 1' ', 1' strip '' and 1 '' ''.

5 The non-loosening of an edge section 6, 10 with an adjacent section 2 can be accomplished by gluing, welding, forming or a combination of these joining techniques. The width of the edge sections 6 and 10 as well as the arrangement of the fixing strips or points can be varied according to the mechanical requirements.

If two sections of the metal strip are to be glued, the application of adhesive takes place on a contour of the metal strip still open. The adhesive application can also be carried out on the flat metal strip, without

However, the application of the adhesive preferably takes place in the area of the bending station on a previously profiled contour. For example, the application of adhesive can be carried out when the outline of the profile 1 shown in Figures 1A and 1B has been obtained. Then lines 11 and 12 of adhesive are preferably applied on the support surface 13 of the central section 2.

After the adhesive is applied to lines, strips or dots, the metal band is bent again, so that

15 minus two flat sections are glued together; in the present case the edge sections 6 and 10 are folded so that these in the area adjacent to the front edges 21 and 22 are glued with the central section 2.

In the bending station the edge sections 6 and 10 are first pressed onto the central section 2, the adhesive is not yet hardened. Since the hardening requires a certain time according to the adhesive used, it is convenient that the glued edge sections 6 and 10 are already fixed in the manufacturing. To do this after the

20 bending of the edge sections 6 and 10 in the contour shown in Figure 2A and 2B a welding is performed, as shown in Figures 3 or 4.

By applying the weld seams 19 and 20 the edge sections 6 and 10 are additionally fixed with each other, in which the weld seams 19 and 20 bridge the groove 18 between the ribs 6 and 10. Thus the Central section between the cross-shaped areas 3 and 7 is configured with double wall.

25 Furthermore, the weld seams 19 and 20 can have a depth that reaches up to the central rib 2, so that also the weld seams 19 and 20 are carried out by welding the edge sections 6 and 10 in the area of the front sides 21 and 22 in the central nerve 2.

By combining the bonding of the edge sections 6 and 10 as well as the subsequent welding, an especially stable profile 1 is obtained.

30 Alternatively, after bonding the edge sections 6 and 10, additional fixing of the edge sections can be made by forming to obtain a stable 1 ’’ profile.

After fixing the ribs 6 and 10 by welding the profile in the form of a 1, 1 ’or 1’ strip can be cut to the desired length.

The profile according to the invention can be used in particular in extraction guides, as can be found in furniture in

35 case of drawers. In this, the profile 1, 1 ', 1' ', 1' '', 1 '' '' shown in the exemplary embodiments can be configured as a central rail, on which an inner rail and a rail are supported by rolling bodies Exterior. By reinforcing the profile in the form of a strip 1, 1 ', 1' ', 1' '', 1 '' '' especially high loads can be absorbed by the extraction guide, in particular also with respect to a lateral request or a torque request.

List of reference signs

1 Profile in the form of a strip 1 ’Profile in the form of a strip 1’ Profile in the form of a strip

5 1 ’’ Profile in the form of a strip 1 ’’ ’Profile in the form of a strip 2 Central section 3 Cross-shaped zone 4 lateral nerve

10 5 Vertical nerve 6 Bent edge section 7 Cross-shaped area 8 Side nerve 9 Vertical nerve

15 10 Prominent edge section 11 Adhesive strip 11 ’Adhesive sections 11’ Adhesive sections 12 Adhesive strip

20 12 ’Adhesive sections 12’ ’Adhesive sections 13 Support surface 14 Lateral nerve 15 Lateral nerve

25 16 Inner surface 17 Inner surface 18 Groove 19 Weld seam 20 Weld sections

30 21 Frontal edge 22 Frontal edge 25 Rolling tracks 30 Concavity 31 Nerve-shaped highlight

35 32 Extreme sections 33 Circular concavity

Claims (8)

1. Extraction guide, especially for furniture, with at least two rails that are relatively movable with one another, which by means of a large number of rolling bodies are supported against each other, with a profile in the form of a strip (1, 1 ', 1 '', 1 '' ', 1' '' ') which is formed from a curved metal band, which 5 has a central area that is arranged between lateral edge sections (6, 10), bending sections (2, 4, 5, 6, 8, 9, 10, 14, 15) being provided in the metal band for the configuration of at least one raceway (25) for rolling bodies, and at least one edge section (6, 10) of the metal band is fixed in an adjacent section (2) of the metal band, the at least one section of edge (6, 10) and the adjacent section (2) at least in areas connected to each other with material coupling, characterized in that the 10 profile (1, 1 ', 1' ', 1' '' ') in the folded sections presents in cross section at least one cross-shaped area (3, 7), in which two lateral ribs are provided ( 4, 14, 8, 15) and two vertical ribs (2, 5, 6, 9, 10), the sections located together with material coupling being provided in a vertical rib (2, 6, 10). 2. Extraction guide according to claim 1, characterized in that the at least one edge section (6, 10) and the adjacent section (2) at least by areas are glued together. 3. Extraction guide according to claim 1 or 2, characterized in that the at least one edge section (6, 10) and the adjacent section (2) at least by areas are welded.

Four.

Extraction guide according to one of claims 1 to 3, characterized in that the at least one edge section (6, 10) and the adjacent section (2) at least by areas are fixed to each other by forming.

5.

Extraction guide according to one of claims 1 to 4, characterized in that the profile on opposite sides

20 has end sections with one or several raceways (25) for rolling bodies and a central section (2) is arranged between the end sections. 6. Extraction guide according to claim 5, characterized in that the central section (2) is configured as a double wall. 7. Extraction guide according to claim 5 or 6, characterized in that the edge sections (6, 10) are arranged with their front edges (21, 22) in the area of the central section (2).

8.

Extraction guide according to one of claims 1 to 7, characterized in that the front edges (21, 22) of the edge sections (6, 10) are at least fixed by areas with one another.

9.

Extraction guide according to claim 1, characterized in that the profile in the form of a strip (1, 1 ’, 1’ ’, 1’ ’, 1’ ’) is configured as a central rail.