Device for securing a profiled cover for floors

Abstract

The invention relates to a device for securing a profiled cover (1) for floors to a securing rail (3), which can be secured onto an underlying surface (2) and which has two securing webs (4) that form a clamping receiving area for two profiled limbs (6) provided on the lower face of the profiled cover (1), and comprising a connecting rail (5), which can be selectively inserted into the clamping receiving area of the securing rail (3) and which is provided with two clamping limbs (7) on the lower face of a rail base (8) and two holding webs (9) that protrude from the rail base (8) and form a clamping mounting for the profiled limbs (6) of the profiled cover (1). In order to expand the range of adaptation possibilities, the invention proposes that the rail base (8) of the connecting rail (5) runs at an incline relative to the clamping limbs (7) and the holding limbs (9) which are offset inwards by the thickness of the profiled limbs (6) of the profiled cover (1) relative to the clamping limbs (7), and the clamping limbs (7) and holding webs (9) of the connecting rail (5) which lie opposite one another in pairs, the securing webs (4) of the securing rail (3), and the profiled limbs (6) of the profiled cover (1) have a different respective height determined by the angle of inclination of the rail base (8).

Description

[0001] Device for attaching a cover profile for floors

[0002] Technical area

[0003] The invention relates to a device for fastening a cover profile for floors with a fastening rail which can be fastened to a substrate and which has two fastening webs forming a clamping receptacle for two profile legs provided on the underside of the cover profile, and with a connecting rail which can be optionally inserted into the clamping receptacle of the fastening rail and which is provided with two clamping legs on the underside of a rail base and with two holding webs projecting from the rail base and forming a clamping holder for the profile legs of the cover profile.

[0004] State of the art

[0005] To bridge steps, joints or butts in floor coverings, it is known (WO 99 / 01628 A1) to provide cover profiles that are invisibly fastened using a fastening rail. For this purpose, the fastening rail, which can be fastened to a substrate, forms parallel fastening webs that protrude from the substrate and create a clamping receptacle for two profile legs provided on the underside of the cover profile. The profile legs engage in the clamping receptacle at different depths to adapt to an existing step in the floor covering. Since the height of the fastening webs determines not only the lowest but also the greatest height of the steps or joints to be bridged, because the height of the profile legs of the cover profile can correspond at most to the height of the fastening webs, the use of these known devices is limited to certain ranges of the joint or step heights to be bridged.

[0006] In order to expand the area of ​​application, it has already been proposed (DE 20 2005 001 979 U1 ) to provide a connecting rail between the fastening rail and the cover profile. This connecting rail can be inserted into the clamping recess between the two fastening webs of a fastening rail that can be connected to the substructure. The connecting rail has two holding webs that protrude from a rail base and are a continuation of the fastening webs of the fastening rail. These holding webs thus form a clamping recess for the profile legs of the cover profile, analogous to the fastening webs. The cover profile can therefore be inserted into either the fastening rail or the connecting rail, so that for greater step or joint heights only the connecting rail needs to be clamped into the clamping recess of the fastening rail before the cover profile is clamped into the connecting rail at a height that takes the respective step or joint height into account.The disadvantage, however, is that although the height of the cover profile can be adjusted to the respective step or joint height, it is hardly possible to compensate for a height difference between floor areas between which the cover profile is intended to create the most continuous transition possible.

[0007] Description of the invention

[0008] The invention is therefore based on the object of designing a fastening device for cover profiles between floor sections in such a way that extensive adaptation to different step or joint heights can be ensured, taking into account any height differences of the floor sections to be bridged by means of the cover profile.

[0009] Starting from a device of the type described at the outset, the invention achieves the stated object in that the rail base of the connecting rail is inclined relative to the clamping legs and the holding legs offset inwards relative to the clamping legs by the thickness of the profile legs of the cover profile, and in that the clamping legs and holding webs of the connecting rail, which are located opposite one another in pairs, the fastening webs of the fastening rail and the profile legs of the cover profile each have a different height determined by the angle of inclination of the rail base.

[0010] Since the offset of the retaining webs of the connecting rail which engage between the profile legs of the cover profile means that the clamping legs of the connecting rail are aligned on the outside with the outer sides of the profile legs, the connecting rail and the cover profile clamped onto the connecting rail form a structural unit which is not only higher than the cover profile by the height of the clamping legs of the connecting rail, but can also be adjusted in height in the clamping receptacle of the fastening rail depending on the height of the clamping legs.In addition, due to the inclined rail base of the connecting rail and the different heights of the paired clamping legs and holding webs of the connecting rail, the fastening webs of the fastening rail and the profile legs of the cover profile, which depend on the inclination of the rail base, structural prerequisites are created for a variable angle of inclination of the cover profile at different heights, which allows adaptation to different step and joint heights as well as to different height distances between the floor sections to be bridged using the cover profile.

[0011] To ensure effective load transfer from the cover profile to the connecting rail, the cover profile can have a support leg between the two profile legs with a support foot angled to match the inclination of the rail floor, which rests against the rail floor to transfer the load. Advantageous design conditions arise in this context if the support leg and the profile leg form a receiving groove for the corresponding retaining web of the connecting rail on the side facing away from the angled support foot.For easy height adjustment of the cover profile and the connecting rail in the clamping receptacle of the fastening rail, the profile legs of the cover profile and the clamping legs of the connecting rail can have longitudinal grooves on the opposite outer sides, which interact with locking lugs provided on the free longitudinal edges of the fastening webs, which enables a gradual height adjustment of the connecting rail or the cover profile according to the mutual distance of the longitudinal grooves.

[0012] In order to easily create sufficient space for the inclined mounting of the cover profile or the connecting rail in the clamping fixture of the mounting rail, the center plane between the two mounting bars of the mounting rail can be inclined towards the lower mounting bar.

[0013] Brief description of the invention

[0014] The drawing shows an example of the subject matter of the invention.

[0015] Fig. 1 shows a device according to the invention for fastening a covering profile for floors in an initial position in a schematic cross-section,

[0016] Fig. 2 shows the device according to Fig. 1 in a position for the greatest construction height, Fig. 3 shows a representation corresponding to Figs. 1 and 2 of the device according to the invention in an inclined intermediate position of the structural unit formed by the cover profile and the connecting rail, and

[0017] Fig. 4 and 5 the device without connecting rail in two intermediate positions in a schematic cross-section.

[0018] Ways to implement the invention

[0019] A device according to the invention for fastening a cover profile 1 for

[0020] Floors comprise a fastening rail 3 which can be fastened to a substrate 2 and which is provided with two upstanding, parallel fastening webs 4 for optionally clamping the cover profile 1 or a connecting rail 5. For this purpose, two parallel profile legs 6 are provided on the underside of the cover profile 1 and two parallel clamping legs 7 are provided on the underside of the connecting rail 5, the outer side of which is aligned with the outer surface of the profile legs 6 when the cover profile is connected to the connecting rail 5 to form a structural unit.To connect the cover profile 1 to the connecting rail 5, the connecting rail 5 has two retaining webs 9 projecting from the rail base 8, which are arranged offset inwards from the clamping legs 7 by the thickness of the profile legs 6 and form a clamping holder for the cover profile 1 when the retaining webs 9 inserted between the profile legs 6 are locked to the profile legs 6 by means of catches 10.Since both the profile legs 6 and the clamping legs 7 aligned with the profile legs 6 have longitudinal grooves 11 on their outer sides and the fastening webs 4 of the fastening rail 3 have locking lugs 12 on the free longitudinal edges which interact with these longitudinal grooves 11, the structural unit comprising the cover profile 1 which is rusted to the connecting rail 5 can be adjusted in height in the clamping receptacle between the two fastening webs 4 of the fastening rail 3, depending on the mutual distance between the longitudinal grooves 11 in steps between a position shown in Fig.

[0021] 1 and a position for the greatest height as shown in Fig. 2.

[0022] 1 to 3, the rail base 8 runs at an incline to the clamping legs 7 and the holding webs 9 of the connecting rail 5. Accordingly, the clamping legs 7 and holding webs 9, which are located opposite one another in pairs, have different heights, with the result that the profile legs 6 of the cover profile 1 and the fastening webs 4 of the fastening rail 3 also have different heights depending on the angle of inclination of the rail base 8. The different heights of the individual webs or legs of the fastening rail 3, the connecting rail 5 and the cover profile 1, which are located opposite one another in pairs and are caused by the angle of inclination of the rail base 8, allow additional adjustment of the inclination of the cover profile 1 to height differences between the floor sections indicated by dash-dotted lines that are to be bridged using the cover profile 1, as can be seen from Fig. 3.A pivot axis caused by the locking engagement of the locking lug 12 of the lower fastening web 4 in the longitudinal grooves 11 of the lower clamping leg 7 allows a larger pivot range compared to the locking lug 12 of the higher fastening web 4 due to the opposite higher clamping leg 7. In order to ensure a corresponding free space for the pivoting movement of the connecting rail 5 in the clamping receptacle between the two fastening webs 4 of the fastening rail 3 while maintaining simple cross-sectional shapes, the central plane 13 indicated in Fig. 3 between the two fastening webs 4 can run inclined towards the lower fastening web 4.

[0023] In order to improve the load transfer from the cover profile 1 to the connecting rail 5, the cover profile 1 can have a support leg 14 between the two profile legs 6 with a support foot 15 angled according to the angle of inclination of the rail base 8, wherein particularly advantageous design conditions arise if the support leg 14 with the profile leg 6 forms a receiving groove 16 for the associated holding web 9 of the connecting rail 5 on the side facing away from the angled support foot 15.

[0024] If the cover profile 1 is used without the connecting rail 5 for lower joint or step heights between the floor sections, comparable conditions arise, as can be seen in Fig. 4. By appropriately selecting the locking points in the area of ​​the opposing profile legs 6, different heights and inclination positions of the cover profile 1 relative to the fastening rail 3 can be set. By rotating the cover profile 1 by 180° with respect to an axis perpendicular to the substrate 2 and the associated assignment of the lower profile leg 6 to the lower fastening web 4 of the fastening rail 3, additional pivot positions of the

[0025] cover profile 1 relative to the fastening rail 3, as indicated in Fig. 5.

Claims

Patent claims 1. Device for fastening a cover profile (1) for floors, comprising a fastening rail (3) which can be fastened to a base (2) and which has two fastening webs (4) forming a clamping receptacle for two profile legs (6) provided on the underside of the cover profile (1), and comprising a connecting rail (5) which can be optionally inserted into the clamping receptacle of the fastening rail (3), which is provided with two clamping legs (7) on the underside of a rail base (8) and with two holding webs (9) projecting from the rail base (8) and forming a clamping holder for the profile legs (6) of the cover profile (1), characterized in thatthat the rail base (8) of the connecting rail (5) is inclined relative to the clamping legs (7) and the holding legs (9) offset inwards relative to the clamping legs (7) by the thickness of the profile legs (6) of the cover profile (1), and that the clamping legs (7) and holding webs (9) of the connecting rail (5) lying opposite one another in pairs, the fastening webs (4) of the fastening rail (3) and the profile legs (6) of the cover profile (1) each have a different height determined by the angle of inclination of the rail base (8).

2. Device according to claim 1, characterized in that the cover profile (1) has a support leg (14) between the two profile legs (6) with a support foot (15) angled according to the angle of inclination of the rail base (8).

3. Device according to claim 2, characterized in that the support leg (14) with the profile leg (6) forms a receiving groove (16) for the associated holding web (9) of the connecting rail (5) on the side facing away from the angled support foot (15).

4. Device according to one of claims 1 to 3, characterized in that the profile legs (6) of the cover profile (1) and the clamping legs (7) of the Connecting rail (5) on the opposite outer sides Have longitudinal grooves (11) which interact with locking lugs (12) provided on the free longitudinal edges of the fastening webs (4).

5. Device according to one of claims 1 to 4, characterized in that the central plane (13) between the two fastening webs (4) of the fastening rail (3) is inclined towards the lower fastening web (4).

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