FASTENING ELEMENT FOR FASTENING AN INSULATION TO A WALL

Abstract

A fastening element for fastening a layer-type component, in particular an insulation, to a setting object, in particular to a wall or ceiling of a building, having a setting element, in particular a nail or a screw, the fastening element comprising: a shaft, an opening for receiving the setting element, a stop for positively fastening the setting element, and a terminating element for bearing on an outer side of the layer-type component, wherein the shaft and the terminating element are formed in one piece, it is intended for an insulation as a layer-type component to be able to be fastened to the wall or ceiling as setting object with little work effort even if cracking should occur in the fastening element. This object is achieved in that the shaft comprises at least two segments and an intermediate opening is respectively formed between the at least two segments.

Claims

1. A fastening element for fastening a layer-type component to a building material having a setting element wherein the fastening element comprises: a shank; an opening for receiving the setting element; a stop for positive fastening of the setting element; a terminal element for contacting an outer side of the layer-type component, wherein the shank and the terminal element are constructed as a single piece; wherein the shank comprises at least two, segments, and at least one intermediate opening formed between each of the at least two segments.

2. The fastening element according to claim 1, wherein the at least one intermediate opening is a slot.

3. The fastening element according to claim 2, wherein the at least one slot and/or the at least two segments are formed essentially parallel to a longitudinal axis of the shank.

4. The fastening element according to claim 2, wherein the slot is continuous, such that in a section taken perpendicular to a longitudinal axis of the shank, there is no connection between the at least two segments, and/or the shank comprises at least three or four segments.

5. The fastening element according to claim 1, wherein the opening for receiving the setting element and/or the stop are formed on the shank.

6. The fastening element according to claim 1, wherein the terminal element is connected to the shank on a second end region of the shank.

7. The fastening element according to claim 1, wherein the terminal element is a disk-shaped contact part.

8. The fastening element according to claim 1, wherein the opening for receiving the setting element is designed as a bore hole for receiving a setting element shank, and a first end of the bore hole is formed on a first end of the fastening element, and the stop is formed in a region of a second end of the bore hole.

9. The fastening element according to claim 1, wherein an axial extension of the at least two segments and/or the at least one intermediate opening is at least 10% of a total axial extension of the fastening element.

10. The fastening element according to claim 1, wherein the at least one intermediate opening has a first end and a second end, and the first end is an end which faces away from the terminal element, and the second end is an end of the at least one intermediate opening which faces the terminal element.

11. The fastening element according to claim 10, wherein an axial extension from a first end of the fastening element to a second end of the at least one intermediate opening is greater than or equal to an axial extension of the opening for receiving the setting element.

12. The fastening element according to claim 10, wherein an axial extension from a first end of the fastening element to the second end of the at least one intermediate opening is greater than 1.2 times an axial extension of the opening for receiving the setting element.

13. The fastening element according to claim 1, wherein an insertion opening for the insertion of the setting element is formed on the terminal element, and/or a feed-through channel bounded by the at least two segments is formed within the shank to allow the passage of the setting element.

14. The fastening element according to claim 1, wherein the fastening element as a whole is formed as a single piece, and/or the fastening element is formed of plastic.

15. A method for fastening a layer-type component to a building material having a fastening element and a setting element, wherein the fastening element comprises: a shank; an opening for receiving the setting element a stop for positive fastening of the setting element a terminal element for contacting an outer side of the layer-type component wherein the shank and the terminal element are constructed as a single piece; wherein the shank comprises at least two segments; and at least one intermediate opening formed between each of the at least two segments, the method comprising: passing the setting element through an insertion opening on the terminal element of the fastening element; passing a setting element shank through the opening for receiving the setting element of the fastening element; fastening the fastening element to the building material by fastening the setting element in the building material and fastening the setting element positively to a stop of the fastening element; bringing a first side of the terminal element to abut against an exterior of the layer-type component such that the layer-type component is held positively by the terminal element.

16. The fastening element according to claim 5, wherein the opening for the setting element and/or the stop are formed on a first end region of the shank.

17. The fastening element according to claim 13, wherein the insertion opening for the insertion of the setting element is formed in a center region of the terminal element.

18. The fastening element according to claim 14, wherein the fastening element is formed exclusively of plastic.

19. The fastening element of claim 18, wherein the plastic is thermoplastic.

20. The fastening element according to claim 11, wherein an axial extension from a first end of the fastening element to the second end of the at least one intermediate opening is greater than 1.2 times an axial extension of the opening for receiving the setting element.

Description

[0025] In the following, embodiments of the invention will be described in detail with reference to the accompanying drawings, wherein:

[0026] FIG. 1 shows a perspective view of a fastening element,

[0027] FIG. 2 shows a longitudinal section of the fastening element according to FIG. 1,

[0028] FIG. 3 shows a cross-section of a shank of the fastening element according to FIG. 1,

[0029] FIG. 4 shows a side view of the shank of the fastening element in a second embodiment,

[0030] FIG. 5 shows a section taken through a wall and an insulation after the fastening of a bolt used as a setting element.

[0031] A fastening element 1 is used for fastening a layer-type component 4, namely an insulation 5, to a wall 3 of a building, as a building material 2. A setting element 8 is formed by a screw 10 or a bolt 11 or nail 11, and a retaining head 9 is formed on the end of the screw 10 or the bolt 11, and the setting element 8 also has a setting element shank 26. The setting element 8 is made of metal. The fastening element 1 is made of plastic.

[0032] The single-piece fastening element 1, which is made entirely of thermoplastic, has a rod-like shank 12 and a terminal element 16. The terminal element 16 is disk-shaped and therefore forms a disk-shaped contact part 17. In the disk-shaped contact part 17, individual recesses are formed to reduce the weight of the disk-shaped contact part 17. The terminal element 16 has a first side 19 for the contact and fastening of the layer-type component 4, and a second side 20. The second side 20 of the terminal element 16 is opposite to the first side 19 of the terminal element 16. The shank 12 has a first end region 24 and a second end region 25. When the fastening element 1 is fastened to the wall 3 (FIG. 5), the first end region 24 is formed on the wall 3 and/or the first end region 24 rests on the wall 3. The second end region 25 on the other end region of the shank 12 is arranged outside of a through-hole 7 of the insulation 5, and the terminal element 16 is fastened to the shank 12 on this second end region 25. The fastening element 1 has a first end 38 facing away from the terminal element 16 and a second end 39. The shank 12 is subdivided on an axial section of the shank 12 into four segments 15. The individual segments 15 in this case are formed coaxially with and/or concentrically to an axial longitudinal axis 22 of the shank 12 and the fastening element 1. Intermediate openings 18 are therefore present between the individual segments 15. Due to the ligamentous form of the segments 12 and/or the substantially greater axial extension of the segments 12 compared to their radial extension and/or extension in the circumferential direction, the intermediate opening 18 is formed as a slot 21 between the segments 15. The shank 12 thus comprises four segments and three slots 21 between the individual segments 15. A fastening and guiding device for the setting element 8 is formed by thermoplastic material on the first end region 24 of the shank 12.

[0033] The fastening device has a stop 23 for positive contact with the retaining head 9 of the setting element 8. An opening 13 is formed as a guide device for the setting element 8, and the opening 13 is designed as a bore hole 14, the axial extension of which in the direction of the longitudinal axis 22 is substantially greater than the diameter and/or the radial extension of the bore hole 14. The opening 13 has a first end 27 and a second end 28. The second end 28 terminates within a feed-through channel 37 which is bounded by the segments 12 and which is intended for the passage of the setting element 8. The first end 27 of the bore hole 14 and/or the opening 13 is arranged on the wall 3 after the fastening. The intermediate opening 18 has a first end 32 facing away from the terminal element 16 and a second end 33 facing the terminal element 16.

[0034] For the fastening of the layer-type component 4, as the insulation 5, to the wall 3, as the building material 2, a bore hole is first made in the wall 3 with a drill, which is not shown. However, the production of this hole is optional and can be omitted. Subsequently, the bolt 11 is inserted into the feed-through channel 36 through an insertion opening 36 on the terminal element 16. Next, the setting element shank 26 is further inserted into the second end 28 of the bore hole 14 until the setting element shank 26 comes to lie against the wall 3, and the first end 27 of the opening 13 and the first end 38 of the fastening device 1 come to lie against the wall 3. Subsequently, the setting element 8 is driven into the building material 2 with a setting device 29the setting device 29 being designed as an impact hammer, by way of exampleuntil the retaining head 9 lies against the stop 23. Due to the thickness of the insulation 5, the first side 19 of the terminal element 16 then lies against an outer side 6 of the layer-type component 4, such that the layer-type component 4 is held between the wall 3 and the first side 19 of the terminal element 16 with a positive and/or force-fit connection (FIG. 5).

[0035] The axial extension 31 of the segments 15 and the intermediate openings 18 corresponds approximately to 70% of the total axial extension 30 of the fastening element 1. A majority of the shank 12 is thus subdivided by means of the segments 15 into the segments 15 and the intermediate openings 18. If cracks arise on the shank 12, in particular on the first end region 24 of the shank 12 during the fastening of the setting elements 8 in the wall 3, these cracks do not lead to a failure of the shank 12 as a whole when these cracks propagate. This is because, when there is a crack in one segment 15, this crack cannot propagate to the other segments 15 in the circumferential direction. A failure of the fastening element 1 due to cracking is thus substantially ruled out, because usually only one, or at most two, segments 15 are damaged by cracking when a crack arises. As a result, two or three load-bearing segments 15 are present which can transmit the required tensile forces from the outside 6 of the layer-type component 4 to the setting element 8. The axial extension 34 from the first end 38 of the fastening element 1, and/or from the first end 27 of the bore hole 14, to the second end 33 of the intermediate opening 18 is greater than the axial extension 35 of the opening 13 as the bore hole 14. This constructively ensures that the fastening element 1 substantially does not fail as a result of cracking.

[0036] Overall, significant advantages are associated with the fastening element 1 according to the invention. When the setting element 8 is driven into the wall 3, greater forces can be transmitted to the shank 12 in the region of the second end 28 of the bore hole 14 by the retaining head 9. This can lead to cracking of the first end region 24 of the shank 12. The region of the shank 12 on the first end 27 of the bore hole 14 has a great thickness, such that in this region of the shank 12 the cracks do not normally lead to a failure of the fastening element 1. However, these cracks can also propagate to the remaining region of the shank 12. However, cracks in this remaining region of the shank 12 do not lead to a failure of the fastening element 1 on the remaining shank 12 since the remaining shank 12 is subdivided into the segments 15, and thus, when cracking occurs on this remaining part of the shank 12, typically only one, or at most two, segments 15 are damaged, and also a propagation of the cracking from one segment 15 to another segment 15 is prevented. As a result, the fastening element 1 has a sufficient number of segments 15 able to bear load. The thickness of the segments 15that is, the radial extension of the segments 15 perpendicular to the longitudinal axis 22is designed so that even one or two segments 15 can safely and reliably absorb the necessary tensile forces.