EP2253777A2 - Profile rail system for covering at least the edge of a lining - Google Patents

Abstract

The system (1) has a base rail (4), and an adjustable cover strip (5) opposite to the base rail, where the cover strip is pulled against the base rail by permanent magnets (20). The base rail and the cover strip are sectionally magnetizable. The base rail and the cover strip have a non-ferromagnetic profiled rail (14) at which ferromagnetic sheets (13, 18) are held. The profiled rail comprises an undercut holder (12) into which the ferromagnetic sheets are inserted. The permanent magnets are surrounded at contact points with the base layer and the cover strip.

Description

The invention relates to a profiled rail system for covering at least one lining edge according to the preamble of patent claim 1.

From the DE 70 35 751 U1 is known a skirting board made of plastic, in which a permanent magnet is held. On the wall, a sheet metal strip is mounted to which the permanent magnet of the skirting board adheres. Since the baseboard has no adjustment, despite a fixed mounting of the permanent magnet in the baseboard in the simplest way a direct contact of the permanent magnet can be realized with the metal strip.

From the DE 10 2007 008 005 A1 Another skirting board is known in which magnets are clipped. These magnets cooperate with ferromagnetic screws to provide support to a wall. Also at This skirting no height adjustment is provided so that the fixed magnets can be in touching contact with the screws.

From the EP 1 837 454 A2 is a generic arrangement with magnetic fastening device for covering a joint or an edge known. This arrangement has a base rail and a cover rail, which are adjustable against each other. The base rail is fixed to a base, while the cover rail overlaps covering edges. In order to hold the cover rail to the base rail, permanent magnets are provided in the base rail and in the cover rail, which are poled against each other. This allows the cover rail to be pulled with bias against the adjacent pads. In addition, viewed from the visible side, no fasteners are visible. This arrangement has been well proven in practice and forms the starting point of the present invention.

The invention has for its object to provide a profile rail system of the type mentioned, which is characterized by improved functionality.

This object is achieved with the features of claim 1.

The profiled rail system according to claim 1 serves to cover at least one lining edge. The covering can be made of any materials such as laminate, Wood, parquet, a polymer, natural or artificial stone. However, this list is not meant to be exhaustive, but merely exemplary. If the profile rail system covers only one lining edge, it serves as edge termination or ramp. Alternatively, however, the profile rail system can also cover a plurality of lining edges, so that it is provided between two coverings, in particular in an expansion joint or a lining transition between two different coverings. The profile rail system can be used on floor, wall and ceiling coverings as well as a skirting board or stair nosing profile. Again, this is only an example and not meant to be exhaustive. The profile rail system has a Basdsschiene, which is preferably fixed to a substrate. For fixing screws, dowels or adhesive bonds are preferably used. The determination on a surface is not mandatory. For example, the base rail can engage under the adjacent covering with a leg in order to achieve a fixation of the base rail in this way. In addition, the profile rail system has a cover rail, which is adjustable relative to the base rail. Preferably, the covering rail is displaceable relative to the base rail, in order in this way to achieve a height adjustment of the covering rail to the thickness of the respective, adjacent covering. To achieve a secure completion of the covering by the cover rail also at least one permanent magnet is provided, which pulls the cover rail against the base rail. In particular, this permanent magnet should exert a pulling force on the cover rail in order to prevent it from coming off to draw adjacent covering. However, it has been found to be disadvantageous to realize this tensile force by two magnets with respect to each other. Depending on the geometry of the profile rail system and the mutual position between the base rail and cover rail resulting in this way very different magnetic field strengths, which may even lead to repulsion of the magnets in each case. This problem has in particular led to the fact that magnetic profiled rail systems for covering pavement edges could not prevail so far. To solve this problem is dispensed with polarity against each other magnets and instead formed both the base rail and the cover rail at least in the partial area magnetizable. This results in that the permanent magnet functionally neither belongs to the base rail nor to the cover rail, but represents a both rails positively connecting retaining means. In this way, the base rail or the cover rail is always and regardless of the respective rail geometry gegenpolig to the permanent magnet magneLisierL, which allows a consistently high tensile force of the cover rail against the base rail over the entire adjustment of the cover rail. Thus, a magnetic holding system for the cover rail is practical and can make good use of its particular advantages. In particular, the holding system, in contrast to a screw from the outside in no way visible. After the cover rail is held in contrast to latching connectors only non-positively and non-positively, a removal of the cover rail of the base rail by overcoming the holding force easily possible. In this way, the space under the cover rail can be made easily accessible. This is especially important for revision work. Thus, the space under the cover rail can be easily used as a cable channel, and even after completion of the profile rail system, a cable can be retracted or replaced. Due to the magnetic support of the cover rail, there is also no signs of fatigue of the retaining mechanism of the cover rail, which are known for example in latching connectors. As magnetizable materials for the base rail and the cover rail in particular ferromagnetic materials have been proven, as they can achieve a much higher coercive force compared to paramagnetic materials. Preferably, iron, cobalt and / or nickel and alloys prepared therefrom are used. Since many ferromagnetic materials have a high hardness, they are difficult to work. In addition, ferromagnetic materials are often subject to corrosion.

Because of the poor machinability, it is generally disadvantageous to produce the entire base rail or the entire cover rail of the magnetizable material, even if this is possible in principle. Instead, it is advantageous according to claim 2, when the base rail or the cover rail are each formed at least two pieces. This rail has at least one non-ferromagnetic profiled rail on which at least one ferromagnetic metal sheet is held. Thus, the magnetizable material does not have to be in the in usually complicated shape of the rail can be brought. Rather, it is sufficient to produce a more or less thin sheet metal strip from the ferromagnetic material. The rail can be made of an easily deformable, castable or extrudable material, so that even complicated shapes can be produced inexpensively. By contrast, such production methods can not be implemented with reasonable effort for ferromagnetic materials. A simple sheet metal strip of ferromagnetic material, however, can be easily manufactured with qeringem cost.

For easy achievement of a positive connection between the ferromagnetic sheet on the one hand and the rail on the other hand, it is advantageous according to claim 3, when the rail has at least one undercut holder, in which the ferromagnetic sheet is inserted. This holder may for example be formed by two vertical webs, which are undercut on mutually facing sides. These webs, together with a base leg of the base rail, form a pocket in which the ferromagnetic metal sheet is held. Due to the undercut of the IIalter the ferromagnetic sheet can withstand tensile forces exerted by the permanent magnet.

A major problem of permanent magnetic holding systems is the dependence of the Lorentz force on the distance between the magnet on the one hand and the ferromagnetic material on the other. This power is increasing the third power of the distance from, so that in permanently mounted permanent magnets only in a very small height adjustment range, a sufficient holding force can be realized.

To solve this problem, it is favorable according to claim 4, when the permanent magnet is in different positions of the cover rail in touching contact with the base rail and the cover rail. This can be most easily realized by the permanent magnet is freely adjustable between the base rail and the cover rail. Alternatively, the permanent magnet could also be pivotally mounted, but this is not usually necessary. By this measure, the mutual distance between the permanent magnet on the one hand and the cover or base rail on the other hand always equal to zero, so that the permanent magnet in each position of the cover rail relative to the base rail can develop its maximum force. This ensures a large height adjustment range, which can cover all types of flooring occurring in practice with a profile rail system.

A simple realization of the contacting contact of the permanent magnet results from claim 5, in that the permanent magnet is arranged at an acute angle to the base or cover rail.

By changing the angle of attack of the permanent magnet to the base or covering rail according to claim 6, the permanent magnet always remains in contact with the base rail and the cover rail. In this way, the desired remains Traction of the permanent magnet obtained in different heights of the cover rail.

To further improve the force effect between the permanent magnet and the base or covering rail, it is advantageous according to claim 7, when the permanent magnet is rounded at contact points with the base or cover rail. This rounding provides an increase in the effective effective area of the permanent magnet. This effective surface would be relatively small with a razor-sharp edge of the permanent magnet, since only a linear contact of the permanent magnet would be ensured and already increases at a small distance from the contact line, the mutual distance between the permanent magnet on the one hand and the base or cover rail on the other hand very quickly. The mutual increase in spacing is reduced by the rounded formation of the permanent magnet by a multiple, so that a significantly larger area around the contact line contributes to the magnetic flux. In this way, the Lorentz force is increased, which is proportional to the cross-sectional area of the magnetic flux.

If the covering rail is to be height-adjustable and pivotable, then it is favorable according to claim 8 if the rounding is crowned. Thus, the enlargement of the cross-sectional area of the magnetic flux is achieved in two dimensions, so that the permanent magnet is pivotable about two axes. Thus, on the one hand, the height and on the other hand, the angular position about a longitudinal axis of the cover rail can be adjusted without reducing the force of the permanent magnet.

Despite the measures described for increasing the cross-sectional area of the magnetic flux, this is low in relation to flat permanent magnets, since only a small portion of the available magnetic surface is always exploitable. For this reason, either a larger number of magnets or magnets with higher coercive force such as cobalt-samarium magnets are preferred. However, such magnets lie flat on a ferromagnetic material, so they can not be separated from the ferromagnet using non-destructive forces practically. Therefore, a flat contact of the permanent magnet on the ferromagnetic material should be avoided as far as possible during assembly of the profiled rail system. To ensure this under all circumstances, it is advantageous according to claim 9, when the base or Abdeckschiene is partially covered by a non-ferromagnetic material. This non-ferromagnetic material can be, for example, a plastic, aluminum, copper or the like, although this list is not meant to be exhaustive, but merely by way of example. The cover prevents a surface contact of the permanent magnet on the ferromagnetic material, so that the holding force between the cover rail and the base rail remains within reasonable limits even during assembly of the profile rail system. Alternatively or additionally, the contact surface of the ferromagnetic material with the permanent magnet may not be formed plan. This contact surface could for example be curved or folded.

To achieve a simple structural design of the profile rail system, it is finally favorable according to claim 10, when the permanent magnet has opposite magnetic poles at its contact points with the base or cover rail. Thus, the full length of the permanent magnet can be used to adjust the cover rail relative to the base rail.

The subject invention is exemplified with reference to the drawing, without limiting the scope.

Figur 1

eine räumliche Darstellung eines Profilschie- nensystems,

Figur 2

eine Schnittdarstellung durch das Profilschie- nensystem gemäß Figur 1 entlang der Schnittli- nie II-II,

Figur 3

die Schnittdarstellung gemäß Figur 2 bei geän- derter Höhenlage der Abdeckschiene und

Figur 4

eine Ansicht des Profilschienensystems 1 aus Richtung IV bei verschwenkter Abdeckschiene.

It shows:

FIG. 1

a spatial representation of a profile rail system,

FIG. 2

a sectional view through the profile rail system according to FIG. 1 along section line II-II,

FIG. 3

the sectional view according to FIG. 2 with changed altitude of the cover rail and

FIG. 4

a view of the profile rail system 1 from direction IV with pivoted cover rail.

The FIG. 1 1 shows a profiled rail system 1 for covering two edges 2 of coverings 3. The profiled rail system 1 has a base rail 4 and a cover rail 5.

The base rail 4 has a base leg 6, which can be fixed to a substrate 7. For this purpose, the base leg 6 has a plurality of holes 8, which can be penetrated by screws, not shown. In this case, the base rail 6 can either be bolted directly to the substrate 7, glued or indirectly fixed by dowels on this.

The base rail 4 also has two vertical guide webs 9, which limit the lateral mobility of the cover rail 5 and facilitate the assembly of the profile rail system 1 in this way. Alternatively to the illustrated embodiment, a variant is conceivable that does not require the guide webs 9.

At the base leg 6 of the base rail 4 also two holding webs 10 are provided, each having mutually facing undercuts 11. These holding legs 10 form a holder 12 for a ferromagnetic sheet 13, which is inserted into the holder 12. Alternatively, it is also thought to form the narrowest distance between the retaining webs 10 only slightly smaller than the width of the ferromagnetic sheet 13, so that in this way the ferromagnetic sheet 13 can be clicked into the holder 12 from above. Preferably, the undercut 11 of the holding webs 10 is dimensioned particularly small in this case.

The base leg 6 forms together with the guide legs 9 and the holder 12 a rail 14, which in the illustrated embodiment in one piece as extruded Part is made. This rail 14 together with the ferromagnetic metal sheet 13 forms the base rail 4.

The cover rail 5 has two covering wings 15 which cover the two covering edges 2. In addition, the cover rail 5 has two guide webs 16, which cooperate with the guide webs 9 of the base rail 4 and realize the guiding action.

At the guide webs 16, a holder 17 is provided for another ferromagnetic sheet 18. This holder 17 is like the holder 12 of the base rail 4 provided with an undercut 19. The undercut 19 may be formed in the same way as the undercut 11 of the base rail 6. In particular, it is envisaged to make the ferromagnetic sheet 18 in the holder 17 inserted or clickable.

To achieve a secure covering of the covering edges 2 by the covering wings 15, it is important that the covering wings 15 are pulled against the coverings 3. The tensile force is realized by a plurality of permanent magnets 20, which are employed at an acute angle 21 to the base rail 4. These permanent magnets 20 are distributed over the length of the profile rail system 1, wherein in the FIG. 1 only one of the permanent magnets 20 can be seen.

The permanent magnet 20 is rounded at contact areas with the ferromagnetic sheets 13, 18 so as to form the cross section of the magnetic flux and thus to increase the force effect of the permanent magnet 20. In the area of contact with the base rail 4, a rounding 22 is cylindrically shaped. It does not matter whether this rounding is circular, elliptical, parabolic or otherwise cylindrical.

In a contact region with the cover leg-side ferromagnetic metal sheet 18, the permanent magnet 20 has a rounded curvature 23. This spherical rounding 23 allows, in contrast to the cylindrical rounding, a pivoting of the cover rail 5 about a longitudinal axis of the profiled rail system 1, without reducing the cross section of the magnetic flux to a single point. Alternatively to the illustrated embodiment according to FIG. 1 is also thought to form both cylindrical contact areas of the permanent magnet 20 or both spherical. Even with spherical rounding 23 of the permanent magnet 20, the concrete form is basically irrelevant. The permanent magnet 20 may have the shape of a sphere, an ellipsoid, a paraboloid or another shape in the region of the spherical rounding 23.

In order to prevent the permanent magnet 20 from lying flat against the ferromagnetic sheet 13, 18 in a horizontal configuration, the ferromagnetic sheet 13, 18 is partially covered by a non-ferromagnetic material 24. Thus, the angle of attack 21 of the permanent magnet 20 can not be reduced to the value zero, so that in each position, which can take the permanent magnet 20, a substantially line-like or point-like contact with the ferromagnetic sheet 13, 18 is given. In the case of a non-planar surface of the ferromagnetic sheet 13, a surface contact of the permanent magnet 20 is excluded due to the shape, so that it is possible to dispense with the non-ferromagnetic material 24.

The operation of the profiled rail system 1 is described below with reference to the sectional drawings in accordance with Figures 2 and 3, respectively, wherein like reference numerals designate like parts. It can be seen in particular from this sectional drawing that the permanent magnet 20 has a linear contact point 25 with respect to the ferromagnetic metal sheet 13. In contrast to the ferromagnetic metal sheet 18, a contact point 26 is punctiform in this area, due to the spherical shape of the permanent magnet 20.

It can be seen from the illustration according to the FIGS. 2 and 3 However, it is clear that relatively large areas around the contact points 25, 26 around a very small distance between the permanent magnet 20 on the one hand and the ferromagnetic sheet 13, 18 on the other hand. In these areas, relatively high magnetic fluxes set in, resulting in a correspondingly increased force effect. This force action tries to tilt the permanent magnet 20, so that the angle 21 is reduced. This results in the cover rail 5 a resulting, directed to the base rail 4 tensile force that presses the cover rail 5 against the floor coverings 3. In this case, the ferromagnetic sheets 13, 18 are moved against each other.

By comparing the FIGS. 2 and 3 to one another it can be seen that the size of the contact points 25, 26 is substantially independent of the angle 21 and thus of the mutual distance between the cover rail 5 and the base rail 4. This results in an approximately equal force effect of the permanent magnet 20 in both cases, so that the cover rail 5 is pulled regardless of the thickness of the pads 3 with approximately constant force against the floor coverings 3.

The FIG. 4 shows a representation of the profile rail system 1 from the direction IV according to FIG. 1 , In contrast to the representation according to the FIGS. 1 to 3 However, while the cover rail 5 is tilted about a longitudinal axis 27. Due to the spherical rounding 23 of the permanent magnet 20, the tilting of the cover rail 5 has no effect on the size of the contact point 25. In this way, therefore, it is ensured that the force of the Permanent magnet 20 is substantially independent of the tilting position of the cover rail 5.

Deviating from the illustrated embodiment, the cover rail 5 may also have only a covering wing 15. In this case, the profile rail system 1 is used as edge termination for a covering 3. It is also thought of; provide different length covering 15 to compensate in this way greater height differences between adjacent pads 3 than this would be possible by tilting the cover rail 5 alone.

Finally, it is also thought to make the covering wings 15 at an angle to each other, to produce in this way a stair nosing for the renovation of stairs.

LIST OF REFERENCE NUMBERS

1

Profile rail system

2

covering edge

3

covering

4

base rail

5

cover rail

6

base leg

7

underground

8th

drilling

9

guide web

10

holding web

11

undercut

12

holder

13

ferromagnetic sheet

14

rail

15

covering wing

16

guide web

17

holder

18

ferromagnetic sheet

19

undercut

20

permanent magnet

21

acute angle

22

cylindrical rounding

23

spherical rounding

24

non-ferromagnetic material

25

contact point

26

contact point

27

longitudinal axis

Claims (10)

Profiled rail system for covering at least one covering edge (2), wherein the profiled rail system (1) at least one base rail (4) and at least one relative to this adjustable cover rail (5) by at least one permanent magnet (20) against the at least one base rail (4) is pulled, characterized in that the at least one base rail (4) and the at least one cover rail (5) are magnetizable at least in the partial area. Profile rail system according to claim 1, characterized in that the base rail and / or cover rail are formed at least two pieces and at least one non-ferromagnetic profile rail (14) on which at least one ferromagnetic sheet (13, 18) is held. Profiled rail system according to claim 2, characterized in that the profiled rail (14) has at least one undercut holder (12) into which the at least one ferromagnetic sheet metal (13, 18) can be inserted and / or clicked. Profile rail system according to at least one of claims 1 to 3, characterized in that the permanent magnet (20) is in different positions of the cover rail (5) in touching contact with the base rail (4) and the covering rail (5). Profile rail system according to claim 4, characterized in that the permanent magnet (20) at an acute angle (21) to the base (4) and covering rail (5) is arranged, wherein the angle (21) with a mutual distance between cover rail (5) and the base rail (4) is preferably changeable. Profile rail system according to claim 4, characterized in that the angle (21) between the permanent magnet (20) and the base (4) and cover rail (5) with the height adjustment of the cover rail (5) can change. Profile rail system according to claim 5 or 6, characterized in that the permanent magnet (20) at contact points (25, 26) with the base (4) and / or cover rail (5) is rounded. Profile rail system according to claim 7, characterized in that at least one of the curves (23) is crowned. Profile rail system according to at least one of claims 5 to 8, characterized in that the base (4) and / or cover rail (5) to avoid a flat contact of the permanent magnet (20) is partially covered by a non-ferromagnetic material (24) and / / or on the side facing the permanent magnet (20) has a non-planar surface. Profile rail system according to at least one of claims 1 to 9, characterized in that the permanent magnet (20) at its contact points (25, 26) with the base (4) and covering rail (5) has opposite magnetic poles.

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