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Title:
FIXING SYSTEM FOR COVERING ELEMENTS
Document Type and Number:
WIPO Patent Application WO/2014/118586
Kind Code:
A1
Abstract:
The subject of the invention is a fixing system for covering elements which allows the fixing of covering elements into the claws of the supporting spine by wedging them into one another, so that a permanent surface is created, meaning that the covering elements could be removed later only be means of mechanical destruction. The fixing system according to the invention consisting of covering elements that have fixing and positioning lugs attached to the claws of L and U profiled supporting spines. It is characterised by that, covering elements (3), that are provided with fixing lug (6), positioning lug (7) and tensioning shoulder (23), are fixed with in a process advancing upwards into claws (10), which are provided with stepped recess containing stop shoulder (13) at its top, lower groove (17) at its lower part and upper groove (18), that are formed at equal distances on the spine element (9) of the supporting spine (2), so that the positioning lug (7) of one of the covering elements (3) is placed fully into the lower groove (17) of the stepped recess (15) of one of the claws (10), then the other end of the covering element (3) is snapped into the upper groove (18) in the stepped recess (15) of the claw (10) located at a lower position with the help of its fixing lug (6), so that the tensioning shoulder (23) of the covering element (3) leans against the stop shoulder (13) formed at the upper part of claw (10) located just below the upper claw (10), then the positioning lug (7) of the next covering elements (3) is placed fully into the lower groove (17) of the stepped recess (15) of the appropriate claws (10), then the other end of the covering element (3) is snapped in place with the help of its fixing lug (6) into the upper groove (18) of stepped recess (15) of a claw (10), in the lower groove (17) of the stepped recess (15) of which the positioning lug (7) in the covering element (3) at a lower position was already placed.

Inventors:
PALLAGI KENDE ISTVÁN (HU)
Application Number:
PCT/HU2014/000010
Publication Date:
August 07, 2014
Filing Date:
February 04, 2014
Export Citation:
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Assignee:
PALLAGI KENDE ISTVÁN (HU)
International Classes:
E04F13/07
Foreign References:
RU49864U12005-12-10
RU26801U12002-12-20
CN201850690U2011-06-01
US6338228B12002-01-15
Attorney, Agent or Firm:
SZILÁGYI, Ildikó (Budapest, HU)
Download PDF:
Claims:
CLAIMS:

1. Fixing system for covering elements consisting of covering elements that have fixing and positioning lugs attached to the claws of L and U profiled supporting spines, characterised by that, covering elements (3), that are provided with fixing lug (6), positioning lug (7) and tensioning shoulder (23), are fixed with in a process advancing upwards into claws (10), which are provided with stepped recess containing stop shoulder (13) at its top, lower groove (17) at its lower part and upper groove (18), that are formed at equal distances on the spine element (9) of the supporting spine (2), so that

the positioning lug (7) of one of the covering elements (3) is placed fully into the lower groove (17) of the stepped recess (15) of one of the claws (10), then the other end of the covering element (3) is snapped into the upper groove (18) in the stepped recess (15) of the claw (10) located at a lower position with the help of its fixing lug (6), so that the tensioning shoulder (23) of the covering element (3) leans against the stop shoulder (13) formed at the upper part of claw (10) located just below the upper claw (10),

then the positioning lug (7) of the next covering elements (3) is placed fully into the lower groove (17) of the stepped recess (15) of the appropriate claws (10), then the other end of the covering element (3) is snapped in place with the help of its fixing lug (6) into the upper groove (18) of stepped recess (15) of a claw (10),

in the lower groove (17) of the stepped recess (15) of which the positioning lug (7) in the covering element (3) at a lower position was already placed.

2. Fixing system for covering elements according to claim 1, characterised by that, a recess (14) is formed next to the stop shoulder (13) at the upper part of the claw (10).

3. Fixing system for covering elements according to any of the claims 1 or 2, characterised by that, a guiding surface (16) is formed with an inclination angle a in the stepped recess (15) at the lower part of claw (10).

4. Fixing system for covering elements according to any of the claims 1 - 3, characterised by that, an inlet wedge (19) is formed at the lower part of the claw (10).

5. Fixing system for covering elements according to any of the claims 1 - 4, characterised by that, the claw (10) is created with a convex arch (11) or with a concave arch (12).

6. Fixing system for covering elements according to any of the claims 1 - 5, characterised by that, the supporting spine (2) is formed with "L" profile.

7. Fixing system for covering elements according to any of the claims 1 - 6, characterised by that, the supporting spine (2) is formed with "U" profile.

8. Fixing system for covering elements according to any of the claims 1 - 7, characterised by that, the supporting spine (2) consists of fixing elements (8) which are provided with holes (20), and one or two spine elements (9), which are provided with claws (10).

9. Fixing system for covering elements according to any of the claims 1 - 8, characterised by that, the upper covering element (4) has fixing lug (6) at its both ends.

10. Fixing system for covering elements according to any of the claims 1 - 9, characterised by that, the length (M) of positioining lugs (7) of the covering elements (3,5) is identical to the length (L) between two adjacent claws (10) of supporting spine (2), i.e. L = M.

Description:
Fixing system for covering elements

The subject of the invention is a fixing system for covering elements which allows the fixing of covering elements into the claws of the supporting spine by wedging them into one another, so that a permanent surface is created, meaning that the covering elements could be removed later only be means of mechanical destruction.

When a covering system is to be applied on side walls in public areas, for example at underpasses or metro stations, then the designers, as well as the contractors should meet very stringent requirements. This is because such wall coverings are expected to be aesthetic in appearance, and at the same time, they must meet a number of mechanical requirements. They must have high load carrying capacity, they should withstand any kind of damage, as well as the effects of weather. In many instances, the coverings hide lots of mechanical equipment, the protection of which is also indispensable.

According to the state of art, the Hungarian patent description HU 205183 makes known a sound absorbing covering, which contains sound absorbing layer on a perforated sheet. The essential idea behind the solution is that the sound absorbing layer, together with the perforated sheet, is bent to form two adjacent parts with triangular shape, while planar rims are formed at its edges, and its side facing the surface to covered is lined with a preferably planar sound transmitting closing sheet, which is connected to the rims, and fixing elements are located on the rims for attaching it to the surface to be covered.

The patent description HU 224651 makes known a set of connecting elements, which contains at least one recipient supporting element having cut out grooves, and the recipient supporting element contains at least one counterpart which is provided with at least one extension, which is capable of making openable connection which can be loaded at least one counter piece in one direction at least with one of its grooves. The grooves of the recipient supporting element are formed as blind grooves in parallel with the edges of the sheet bands, which sheet bands are arranged along the longitudinal edges, which are open upwards in using position from the longitudinal edges of the band. The extension of the counter piece can be inserted into one of the blind grooves of the recipient supporting element from the direction of edge of the sheet band, the blind grove is being formed as an extension having a size fitted to the groove width of the blind groove. The set of connecting elements can be preferably used to form disengaging shape closing joints of structural components, particularly for creating wall cladding, space partitions and built furniture.

The drawbacks of the known solutions described above are that they do not allow forming a permanent unit from the mounted covering elements.

When creating the solution according to the invention we had the aim to create a fixing system for covering elements, which allow withstanding high mechanical loads after installation, and to provide a system where the covering elements cannot be removed manually or with simple tools from their places.

When creating the solution according to the invention we realized, that if we connect covering elements in a process advancing upwards, which contain fixing lug, positioning lug and tensioner, with the help of claws having stepped recess with stop shoulder at its upper part and lower groove at its lower parts and an upper groove, formed at equal distances from each other on the spine element of a supporting spine, by placing the positioning lug of one of the covering elements fully into the lower groove of the stepped recess of one of the claws, and when the other end of the covering element is snapped with the help of its fixing lug into the upper groove of the stepped recess of a claw positioned at a lower level, and when the positioning lug of the subsequent covering element is placed fully into the lower groove of the stepped recess of the appropriate claw, and when the other end of the covering element is snapped with the help of its fixing lug into the upper groove of the stepped recess of a claw, into the lower groove of the stepped recess of which the positioning lug of the covering element positioned at a lower level has already been installed, then the set aim can be achieved.

The invention is a fixing system for covering elements consisting of covering elements that have fixing and positioning lugs attached to the claws of L and U profiled supporting spines.

It is characterised by that, the covering elements, that are provided with fixing lug, positioning lug and tensioning shoulder, are fixed with in a process advancing upwards into claws, which are provided with stepped recess containing stop shoulder at its top, lower groove at its lower part and upper groove, that are formed at equal distances on the spine element of the supporting spine, so that the positioning lug of one of the covering elements is placed fully into the lower groove of the stepped recess of one of the claws, then the other end of the covering element is snapped into the upper groove in the stepped recess of the claw located at a lower position with the help of its fixing lug, so that the tensioning shoulder of the covering element leans against the stop shoulder formed at the upper part of claw located just below the upper claw, then the positioning lug of the next covering elements is placed fully into the lower groove of the stepped recess of the appropriate claws, then the other end of the covering element is snapped in place with the help of its fixing lug into the upper groove of stepped recess of a claw, in the lower groove of the stepped recess of which the positioning lug in the covering element at a lower position was already placed.

In a preferred embodiment of the fixing system according to the invention a recess is formed next to the stop shoulder at the upper part of the claw.

In another preferred embodiment of the fixing system according to the invention a guiding surface is formed with an inclination angle a in the stepped recess at the lower part of claw. In a further preferred embodiment of the fixing system according to the invention an inlet wedge is formed at the lower part of the claw.

In a further preferred embodiment of the fixing system according to the invention the claw is created with a convex arch or with a concave arch.

In a further preferred embodiment of the fixing system according to the invention the supporting spine is formed with "L" or "U" profile.

In a further preferred embodiment of the fixing system according to the invention the supporting spine consists of fixing elements which are provided with holes, and one or two spine elements, which are provided with claws.

In a further preferred embodiment of the fixing system according to the invention the upper covering element has fixing lug at its both ends.

In a further preferred embodiment of the fixing system according to the invention the length of positioining lugs of the covering elements is identical to the length between two adjacent claws of supporting spine, i.e. L = M.

The solution according to the invention is set forth on the basis of the attached figures: Fig. 1 shows the perspective view of the fixing system for covering elements according to the invention.

Fig. 2 shows the top view of the system of covering elements introduced in Fig. 1.

Fig. 3 shows section B-B of the fixing system for covering element according to the invention introduced in Fig. 1.

Fig. 4 shows the enlarged view of detail "A" introduced in Fig. 1.

Fig. 5 shows the enlarged view of detail "C" introduced in Fig. 3.

Fig. 6 shows the lateral view of a possible embodiment of the L profiled supporting spine of the fixing system for covering elements according to the invention.

Fig. 7 shows the top view of the L profiled supporting spine, introduced in Fig. 6, of the fixing system for covering elements according to the invention.

Fig. 8 shows section D-D of the L profiled supporting spine, introduced in Fig. 7, of the fixing system for covering elements according to the invention.

Fig. 9 shows the lateral view of a possible embodiment of U profiled supporting spine 2 of the fixing system for covering elements 1.

Fig. 10 shows the top view of the U profiled supporting spine 2 of the fixing system for covering elements 1 introduced in Fig. 9.

Fig. 11 shows section F-F of the U profiled supporting spine of the fixing system for covering elements introduced in Fig. 10.

Fig. 12 shows the enlarged image of detail "E" introduced in Fig. 6 and 9 in case of a possible embodiment of claw.

Fig. 13 shows the lateral view of L profiled supporting spine of another possible embodiment of the fixing system for covering elements according to the invention. Fig. 14 shows the top view of L profiled supporting spine 2, introduced in Fig. 13, of the fixing system for covering elements 1 according to the invention.

Fig. 15 shows section H-H of the L profiled supporting spine, introduced in Fig. 14, of the fixing system for covering elements according to the invention.

Fig. 16 shows the lateral view of U profiled supporting spine 2 of another possible embodiment of the fixing system for covering elements 1 according to the invention.

Fig. 17 shows the top view of U profiled supporting spine, introduced in Fig. 16, of the fixing system for covering elements according to the invention.

Fig. 18 shows section J-J of the U profiled supporting spine, introduced in Fig. 17, of the fixing system for covering elements according to the invention.

Fig. 19 shows the enlarged image of detail "G", introduced in Fig. 13 and 16, in case of another possible embodiment of claw.

Fig. 20 shows the lateral view of a possible embodiment of upper covering element of the fixing system for covering elements according to the invention.

Fig. 21 shows the lateral view of a possible embodiment of covering element of the fixing system for covering elements according to the invention.

Fig. 22 shows the lateral view of a possible embodiment of edge closing profile of the fixing system for covering elements according to the invention.

Fig. 23 shows section P-P of edge closing profile, introduced in Fig. 22, of the fixing system for covering elements according to the invention.

A detail of the installation of the edge closing profile is introduced in Fig. 24 in case of the fixing system for covering elements.

Fig. 25 introduces the phases of the fastening process of covering element of the fixing system for covering elements according to the invention.

Fig. 26 shows the enlarged image of detail "Z" introduced in Fig. 25.

Fig. 1 shows the perspective view of the fixing system for covering elements 1 according to the invention. In the figure it is possible to see the fixing system for covering elements 1 with the L profiled supporting spine 2 and the U profiled supporting spine 2, which are fixed to the wall 22 with known method, as well as the covering element 3 having variable width, the upper covering element 4 and the lower covering element 5. It can be well seen in the figure, that the covering elements 3,4,5 aligned continuously next to one another are fixed side by side so that one of the covering elements 3 is fixed to the claws 10 located on one of the spine elements 9 of the U profiled supporting spine 2, while the adjacent covering element 3 is fastened to the claws 10 located on the other spine element 9 of the same U profiled supporting spine 2, so that these edges of covering element 3 located next to each other are fitted together without gap, as a result of which, the covering surfaces 21 and positioning lugs 7 of the covering elements 3 ensure sufficient coverage. It is also possible to see in the figure, that even an L profiled supporting spine 2 is enough in the given case for fixing the extreme edges of the covering elements 3. Furthermore, the L profiled supporting spine 2 can also be used, when we intend to install a relative long covering element 3, and in this case, one or more L profiled supporting spines 2 are to be fixed at several locations along the length of covering element 3 for the purpose of reinforcing between the two extreme fixing positions. The figure also shows the fixing element 8 of the supporting spine 2, and spine element 9, which is provided with claws 10, and the fixing lugs 6 and positioning lugs 7 of covering elements 3,5, and the upper covering element 4 with its two fixing lugs 6, which are fastened into the claws 10. Furthermore, the figure shows the edge closing profile 24.

Fig. 2 shows the top view of the system of covering elements 1 introduced in Fig. 1. In the figure it is possible to see the fixing system for covering elements 1 together with the L profiled supporting spine, which is fixed to the wall 22 with a know method, and the covering elements 3 having various widths, with the upper covering element 4 and with the lower covering element 5. It can be well seen in the figure, that the covering elements 3,4,5 aligned continuously next to one another are fixed side by side so that one of the covering elements 3 is fixed to the claws 10 located on one of the elements 9 of the U profiled supporting spine 2, while the adjacent covering element 3 is fastened to the claws located on the other element 9 of the same U profiled supporting spine 2, so that these edges of covering elements 3 located next to each other are fitted together without gap. It can be seen in the figure also, that it is enough to use an L profiled supporting spine 2 for fastening the extreme edges of the covering elements 3 in the given case.

The figure also shows the fixing element 8 of the supporting spine 2, as well as the spine element 9 which is provided with claws 10.

Fig. 3 shows section B-B of the fixing system for covering element 1 according to the invention introduced in Fig. 1. In the figure it is possible see the fixing system for covering element 1 together with the U profiled supporting spine 2, which is fastened to the wall 22 with known method, and with covering elements 3, with upper covering elements 4 and with lower covering elements 5.

It can be seen well in the figure, that the covering elements 3,4,5 positioned on top of one another are fastened in positions on top of one another, so that first the positioning lug 7 of the covering element 5 is placed into the stepped recess 15 of the appropriate claw 10, and then its fixing lug 6 is hooked into the stepped recess 15 of the lowermost claw 10. Then the positioning lug 7 of the covering element 3 is placed in the stepped recess 15 of the claw 10, and then the fixing lug 6 is hooked into the stepped recess 15 of a claw 10, in which the positioning lug 7 of covering element 4 was inserted previously.

In addition to that, the figure shows that the upper covering element 4 is located at the upper part of the fixing system for covering elements 1 in a way, that in this case the upper fixing lug 6 of the upper covering element 4 is hooked into the upper recess 14 of the topmost claw 10, then its lower fixing lug 6 is hooked into the lower stepped recess 15 of the appropriate claw 10 above the positioning lug 7, which was installed earlier, of the covering element 3 located below it.

Fig. 4 shows the enlarged view of detail "A" introduced in Fig. 1. The figure shows the U profiled supporting spine 2, where the positioning lug 7 of covering element 3, located at a lower position, is placed into the lower groove 17 of the stepped recess 15 in the claw 10 of one of its spine elements 9, while the fixing lug 6 of the covering elements located at a higher position is fixed above this, i.e. into the upper groove 18 of the stepped recess 15.

Fig. 5 shows the enlarged view of detail "C" introduced in Fig. 3. The figure shows the U profiled supporting spine 2, where the positioning lug 7 of covering element 3, located at a lower position, is placed into the lower groove 17 of the stepped recess 15 in the claw 10 of one of its spine elements 9, while the fixing lug 6 of the covering elements located at a higher position is fixed above this, i.e. into the upper groove 18 of the stepped recess 15. It can be seen well in the figure, that the tensioning shoulder 23 of the covering element 3 is directly seated on the stop shoulder 13, which is formed at the upper part of the claw 10 just below the previous claw 10. In this way, the positioning lug 7 of covering element 3 is practically entirely wedged between two adjacent claws 10 of the supporting spine 2, so that the dimension of the positioning lug 7 is fitted by means of changing the shape to the length "L" existing between the lower grove 17 of the upper claw 10 and the stop shoulder 13 of the claw 10 positioned below it, and the tensioning shoulder 23 leans against the stop shoulder 13 of the lower claw 10.

Fig. 6 shows the lateral view of a possible embodiment of the L profiled supporting spine 2 of the fixing system for covering elements 1 according to the invention.

Fig. 7 shows the top view of the L profiled supporting spine 2, introduced in Fig. 6, of the fixing system for covering elements 1 according to the invention.

Fig. 8 shows section D-D of the L profiled supporting spine 2, introduced in Fig. 7, of the fixing system for covering elements 1 according to the invention.

In the figure, it is possible to see the fixing element 8 with wholes 20 of the L profiled supporting spine 2, as well as the spine element 9 which is provided with claws 10.

Fig. 9 shows the lateral view of a possible embodiment of U profiled supporting spine 2 of the fixing system for covering elements 1.

Fig. 10 shows the top view of the U profiled supporting spine 2 of the fixing system for covering elements 1 introduced in Fig. 9.

Fig. 11 shows section F-F of the U profiled supporting spine 2 of the fixing system for covering elements 1 introduced in Fig. 10.

In the figures it is possible to see the fixing element 8 of the U profiled supporting Spine 2 having holes 20, as well as the two spine elements 9, which are provided with claws 10.

Fig. 12 shows the enlarged image of detail "E" introduced in Fig. 6 and 9 in case of a possible embodiment of claw 10. The figure shows the fixing element 8 and spine element 9 of the supporting spine 2. The figure clearly depicts the claw 10 formed with a concave arch 12, shaped on the spine element 9. The stop shoulder 13 is formed at the upper part of the claw 10, while the inlet wedge 19 and the stepped recess 15 are formed at its lower part. A guiding surface 16 having an inclination angle a is formed within the stepped recess 15 together with the lower groove 17 and the upper groove 18.

Fig. 13 shows the lateral view of L profiled supporting spine 2 of another possible embodiment of the fixing system for covering elements 1 according to the invention. Fig. 14 shows the top view of L profiled supporting spine 2, introduced in Fig. 13, of the fixing system for covering elements 1 according to the invention.

Fig. 15 shows section H-H of the L profiled supporting spine 2, introduced in Fig. 14, of the fixing system for covering elements 1 according to the invention.

In the figures it is possible to see the fixing element 8 provided with holes 20 of the L profiled supporting spine 2, as well as the spine element 9 provided with claws 10.

Fig. 16 shows the lateral view of U profiled supporting spine 2 of another possible embodiment of the fixing system for covering elements 1 according to the invention.

Fig. 17 shows the top view of U profiled supporting spine 2, introduced in Fig. 16, of the fixing system for covering elements 1 according to the invention.

Fig. 18 shows section J-J of the U profiled supporting spine 2, introduced in Fig. 17, of the fixing system for covering elements 1 according to the invention.

In the figures it is possible to see the fixing element 8 provided with holes 20 of the U profiled supporting spine 2, as well as the two spine elements 9 provided with claws 10.

Fig. 19 shows the enlarged image of detail "G", introduced in Fig. 13 and 16, in case of another possible embodiment of claw 10. The figure shows the fixing element 8 and spine element 9 of the supporting spine 2. The figure clearly depicts the claw 10 formed with a convex arch 11 on the spine element 9. A stop shoulder 13 is formed at the top part of the claw 10, and a recess 14 is formed at the stop shoulder 13. The inlet wedge 19 and the stepped recess 15 are formed at the lower part of the claw 10. Within the stepped recess 15, the guiding surface 16 is formed with an inclination angle a, as well as the lower groove 17 and the upper groove 18.

Fig. 20 shows the lateral view of a possible embodiment of upper covering element 4 of the fixing system for covering elements 1 according to the invention. The upper covering element 4 and its covering surface 21 can be seen in the figure. Both ends of the upper covering element 4 are provided with fixing lug 6.

Fig. 21 shows the lateral view of a possible embodiment of covering element 3 of the fixing system for covering elements 1 according to the invention. The figure shows the covering surface 21 of the covering element 3. One of the ends of the covering element 3 is provided with fixing lug 6, while its other end is provided with tensioning shoulder 23 and the positioning lug 7 having a length M. The lower covering element 5 applied with the fixing system for covering element is formed similarly to the forming of covering element 3, except that when the lower covering element 5 is applied as a footing element if required, as in the given case, then it is located a bit farther inwards relative to the plane determined by the covering element 3, therefore, its dimensions change a little, but its geometrical shape remains identical to that of covering element 3.

Fig. 22 shows the lateral view of a possible embodiment of edge closing profile of the fixing system for covering elements according to the invention.

Fig. 23 shows section P-P of edge closing profile, introduced in Fig. 22, of the fixing system for covering elements according to the invention. The edge closing profile 24 can be seen in the figure together with its fixing part 25 with holes 20, and with the formed void 26.

A detail of the installation of the edge closing profile is introduced in Fig. 24 in case of the fixing system for covering elements.

The figure shows the edge of the covering element 3 fixed on the U profiled supporting spine 2 attached to the wall 22. For fixing the edge closing profile 24, first the void 26 part of edge closing profile 24 is fitted to the covering element 3, and then it is fastened to the supporting spine 2 with the help of fixing part 25 with a known method, for instance by means of screws.

Fig. 25 introduces the phases of the fastening process of covering element of the fixing system for covering elements according to the invention.

Fig. 26 shows the enlarged image of detail "Z" introduced in Fig. 25.

It can be seen in the figures, that in phase I, the positioning lug 7 of covering element 3 is placed in the stepped recess 15 of claw 10 in a way that the positioning lug 7 of the slightly tilted covering lug 3 is guided fully into the lower groove 17 with the help of the a guiding surface 16 of the stepped recess 15, and then in phase II, as a result of a force acting on the other end of covering element 3, its fixing lug 6 is snapped into the upper groove 18 of stepped recess 15 at the appropriate claw 10. At the same time, the tensioning shoulder 23 of covering element 3 gets positioned, which directly leans against the stop shoulder 13 formed in the upper part of claw 10 located directly below the mentioned claw 10. In this way, the positioning lug 7 of covering element 3 practically gets fully wedged between the two adjacent claws 10 of the supporting spine 2.

In case of a preferred embodiment of the solution according to the invention the supporting spine 2 is made of an L profiled or a U profiled supporting element, and in the fixing element 8 of the said supporting spine 2 holes 20 are formed. In one or two spine elements 9 of the supporting spine 2 claws 10 are formed at equal distances.

In case of a possible embodiment of claw 10, concave arch 12 is used to form the claw 10. The stop shoulder 13 is formed at the upper part of claw 10, while the inlet wedge 19 and the stepped recess 15 are formed at its lower part. The guiding surface 16, having an inclination angle a, is formed within the stepped recess 15 together with the lower groove 17 and the upper groove 18.

In case of another possible embodiment of claw 10, a concave arch 11 is shaped on the spine element 9 to form the claw 10. At the upper part of claw 10 the stop shoulder 13 is formed, and the recess 14 is formed at the stop shoulder 13. At the lower part of claw 10 the inlet wedge 19 and the stepped recess 15 are formed. The guiding surface 16, having an inclination angle a, is formed within the stepped recess 15, the lower groove 17 and the upper groove 18. In case of this design, it is the recess 14, which makes necessary the application of convex arch 11 on the claw 10 for structural reasons, so that this solution would also meet the requirement to withstand shearing load. The covering element 3 and the lower covering element 5 are crated with a rectangular covering surface 21, as well as with a fixing lug 6 at one of its ends, and with a tensioning shoulder 23 at its other end, and with a positioning lug 7 having a length M.

The upper covering element 4 is also created with rectangular shape and size similar to those of covering elements 3,5, having fixing lugs 6 at both ends.

The dimensions of covering element 3,4,5 of supporting spine 2 of the fixing system for covering elements 1 are determined in a way, that they are fitted to one another in a shape closing fashion. Accordingly, the length "M" of the positioning lugs 7 of the covering element 3,5 shall be identical to length "L" on supporting spine 2 between two adjacent claws 10, i.e. L = M. Length "L" is the distance from the inside of lower grove 17 of claw 10 to the stop shoulder 13 of the second claw 10 next to it.

Furthermore, length "S2" of covering elements 3,5 shall be determined in a way, that it would be in harmony with the uniform placing scheme of claws 10 formed on supporting spine 2. It means, that length "S2" of the given covering element 3,5 shall be so selected, that it would be identical to the distance from the innermost point of lower groove 17 of stepped recess 15 of one of the claws 10 to the innermost point of lower groove 17 of stepped recess of another claw 10. Accordingly, covering elements 3,5 with various widths can be created and used in case of the fixing system for covering elements 1.

In addition to that, length "SI" of upper covering elements 4 shall be so determined, that it would be in harmony with the uniform placing scheme of claws 10 formed on supporting spine 2. It means, that length "SI" of the given upper covering element 4 shall be so selected, that it would be identical to the distance from the innermost point of recess 14 of the uppermost claw 10 to the innermost point of lower groove 17 of stepped recess of another claw 10 located at a lower position.

In case of a preferred actual application of the solution according to the solution, first the supporting spines 2 of the fixing system for covering elements 1 are mounted on the given surface, wall, console or other fitting with proper consideration of the length of covering elements 3,4,5, meaning that "U" profiled supporting spines 2 are placed at the longitudinal interfaces of the covering elements 3,4,5, because the end of one of the covering elements 3,4,5 are fixed into the claws 10 of one of the spine elements 9 of the supporting spine 2, while the end of covering element 3,4,5 next to it in longitudinal direction is placed in the claws 10 of another spine element 9.

Then the covering elements 3,4,5 are placed on the supporting spines 2 proceeding upwards.

First, the positioning lug 7 of the lower covering element 5 is placed into the stepped recess 15 of the appropriate claw 10 in a way, that the positioning lug 7 of the slightly tilted lower covering element 5 is guided fully into the lower groove 17 with the help of the guiding surface 16 of the stepped recess 15, and then, as a result of a force exerted on the other end of covering element 5, its fixing lug 6 is snapped through the inlet wedge 19 into the upper groove 18 of the stepped recess 15 of the lowermost claw 10. At the same time, the tensioning shoulder 23 of the lower covering element 5 gets positioned, which leans on the stop shoulder 13 formed at the upper part of claw 10 directly below the mentioned claw 10.

In the second step, a covering element 3 is mounted in a way, that the positioning lug 7 of the covering element 3 is placed into the stepped recess 15 of the appropriate claw 10, so that the positioning lug 7 of the slightly tilted covering element 3 is guided fully into the lower groove 17 with the help of the guiding surface 16 of the stepped recess 15, and as a result of a force exerted on the other end of covering element 3, its fixing lug 6 is snapped into the upper groove 18 of the stepped recess of a claw 10, where in the lower groove of stepped recess 15 .of the said claw 10 the positioning lug 7 of the lower covering element 5 was already placed.

The fastening of covering elements 3 is to be continued according to the above description until we get to the installation of the upper covering element 4. This is to be done by hooking the fastening lug 6 of covering element 4 into the recess 14 of the uppermost claw 10, then the fastening lug 6 at its other end is to be snapped into the upper grove 18 of stepped recess 15 of the claw 10, in the lower groove 17 of which a positioning lug 7 of the covering element 3 was already installed.

If required, edge closing profile 24 can be mounted on the edges of the surface that has been provided with covering.

The inclination angle of guiding surface 16 of the stepped recess 15 is a = 8-12°, preferably 10°.

The material of covering element 3,4,5: stainless steel, iron, aluminium, plastics. It thickness: 0.8 - 2 mm.

The advantage of the solution according to the invention is that the fixing system for covering elements is highly variable and it excellently withstands all kinds of mechanical effects. Although the main objective of the design was to create a vandalism proof structure, but there are extremely many possible applications of the covering as a result of the various wall thicknesses, materials and the multitude of possible surface finishes and colours. The assembling can be done easily and quickly, but an eventual disassembling is rather difficult. List of referred items:

1 - fixing system for covering elements

2 - supporting spine

3 - covering element

4 - covering element (upper)

5 - covering element (lower)

6 - fixing lug

7 - positioning lug

8 - fixing element

9 - spine element

10 - claw

11 - convex arch

12 - concave arch

13 - stop shoulder

14 - recess

15 - stepped recess

16 - guiding surface

17 - lower groove

18 - upper groove

19 - inlet wedge

20 - hole

21 - covering surface

22 - wall

23 - tensioning shoulder

24 - edge closing profile

25 - fixing part

26 - void

L - length

M - length

SI, S2 - length

a - inclination angle