SYSTEM FOR FASTENING A PLANAR ELEMENT TO A COMPONENT AND FASTENING CLIP FOR USE IN SUCH A SYSTEM

Abstract

The invention relates to a system for fastening a planar element (19), which has a cut-out (22), to a component (20), which has a borehole (18) having a screw thread (21), comprising a fastening dip (1), which has a contact section (2) having at least one contact plane (3) for contacting a first side of the planar element (19) facing away from the borehole (18), the fastening clip (1) having an elastic first retaining element (6) in a connection section (5), which first retaining element is connected to the contact section (2) and is designed in such a way that, after the planar element (19) has been fastened, the first retaining element reaches through the cut-out (22) of the planar element (19) into the borehole (18) when the contact plane (3) lies on the first side (24) of the planar element (19). According to the invention, the fastening clip (1) has an elastic second elastic retaining element (7), which is connected to the contact section (2) and is designed in such a way that, before the planar element (19) is fastened to component (20), the second retaining element reaches through the cut-out (22) of the planar element (19) and behind the planar element (19) on a second side (25) of the planar element (19) in such a way that a pressing force is applied to the second side (25) by the fastening clip (1) when the contact plane (3) lies on the first side (24) of the planar element (19). The invention further relates to a fastening clip (1) for use in such a system.

Claims

1. A system for fastening a planar element (19), which has a cut-out (22), to a component (20), which has an opening (18) with at least one latching means (21), having a fastening clip (1) which has a contact section (2) having at least one contact plane (3) for contacting a first side (24) of the planar element (19), wherein the fastening clip (1) has a first elastic retaining element (6), which is connected to the contact section (2) and is designed in such a way that, after the planar element (19) has been fastened to the component (20), it reaches through the cut-out (22) of the planar element (19) and into the opening (18), when the contact plane (3) lies on the first side (24) of the planar element (19), characterized in that the fastening clip (1) has a second elastic retaining element (7), which is connected to the contact section (2) and is designed in such a way that, before the planar element (19) is fastened to component (20), the second retaining element reaches through the cut-out (22) of the planar element (19) and behind the planar element (19) on a second side (25) of the planar element (19) in such a way that a pressing force is applied by the fastening clip (1) to the second side (25) of the planar element (19) when the contact plane (3) lies on the first side (24) of the planar element (19) and wherein the second retaining element (7) of the fastening clip (1) has a first leg (13) and opens out in a second leg (14), wherein the first leg (13) and the second leg (14) enclose an acute angle.

2. The system of claim 1, characterized in that the opening (18) is designed as a borehole (18) and the latching device (21) is designed as at least one slot (23) or thread (21) having at least one thread groove (23), wherein the first retaining element (6) of the fastening clip (1) engages in the slot (23) or thread groove (23), when the contact plane (3) rests on the first side of the planar element (19), such that the fastening clip (1) is fixed in the slot (23) or in the thread groove (23) in a direction, which is axial relative to the opening (18).

3. The system of claim 1, characterized in that the first retaining element (6) of the fastening clip (1) has a first leg (8) and opens out in a second leg (9), wherein the first leg (8) and the second leg (9) enclose an acute angle.

4. The system of claim 3, characterized in that the first leg (8) and the second leg (9) of the first retaining element (6) are spaced apart by a connection element (10), wherein the first leg (8) and the second leg (9) are aligned in such a way that they are aligned in parallel to each other or enclose an angle of up to 20, preferably less than 10.

5. The system of claim 3, characterized in that at one end of the second leg (9) of the first retaining element (6) a first retaining section (11) is formed, which is oriented at an angle of 25 to 65, preferably between 35 and 55 on a side of the first retaining element (6), which faces the slot (23) or thread groove (23) with respect to the second leg (9) of the first retaining element (6).

6. The system of claim 3, characterized in that the first retaining element (6) is designed as to be tapered towards a tip of the retaining element.

7. The system of claim 3, characterized in that the first leg (8) of the first retaining element (6) has a corrugation or an indentation (12).

8. The system of claim 3, characterized in that an angle of 25 to 65, preferably between 35 and 55 is provided between the first leg (13) and the second leg (14) of the second retaining element (7).

9. The system of claim 4, characterized in that a second retaining section (15), which branches out at an angle from the second leg (14) of the second retaining element (7) and which is directed towards the first leg (13) is provided at one end of the second leg (14) of the second retaining element (7).

10. The system of claim 1, characterized in that the second retaining element (7) is connected to the contact section (2) at a pivot plane (4), wherein the pivot plane (4) is elastically connected to the contact plane (3).

11. The system of claim 10, characterized in that the pivot plane (4) is spaced from the contact plane (3) by at least one spacer element (16).

12. The system of claim 1, characterized in that the fastening clip (1) is composed of a metal or a metal alloy or is made of a plastics material, such as polyamide, polyoxymethylene or polybutylene terephthalate.

13. The system of claim 1, characterized in that an insulating plate or an insulating body is used as a planar element (19) for acoustical and/or thermal insulation in the automotive sector.

14. A fastening clip (1) having a contact section (2) with a first retaining element (6) and with a second retaining element (7), wherein the contact section (2) and the second retaining element (7) are used for pre-fixing to a planar element (19) and the first retaining element (6) is used for fastening the planar element (19) to a component (20).

15. A planar element (19) for use in a system according to claim 1, in the cut-outs (22) of which fastening clips (1) are arranged in a pre-assembled state.

16. A planar element (19) for use in a system according to claim 2, in the cut-outs (22) of which fastening clips (1) are arranged in a pre-assembled state.

17. A planar element (19) for use in a system according to claim 3, in the cut-outs (22) of which fastening clips (1) are arranged in a pre-assembled state.

18. A planar element (19) for use in a system according to claim 4, in the cut-outs (22) of which fastening clips (1) are arranged in a pre-assembled state.

19. A planar element (19) for use in a system according to claim 5, in the cut-outs (22) of which fastening clips (1) are arranged in a pre-assembled state.

20. A planar element (19) for use in a system according to claim 6, in the cut-outs (22) of which fastening clips (1) are arranged in a pre-assembled state.

Description

[0032] Advantageous embodiments of the invention are illustrated in the drawings.

[0033] FIG. 1 is a schematic representation of a fastening clip in a side view,

[0034] FIG. 2 is a schematic representation of the fastening dip in a plan view,

[0035] FIG. 3 is a schematic view of the fastening dip in a front view and

[0036] FIG. 4 is a schematic representation of the fastening clip in a system upon connection of a planar element to a component in a cross-sectional view.

[0037] FIG. 1 shows a schematic representation of a possible embodiment of the system according to the invention with a fastening clip 1 preferably used therein in a side view. The fastening clip 1 has an contact section 2. The contact section 2 is adapted to be placed on a first side of a planar element 19 (see FIG. 4). The contact section 2 comprises a contact plane 3 for this purpose. It further comprises a pivot plane 4. The fastening clip 1 also has a connection section 5. The connection section 5 serves to ensure a secure connection of the fastening clip 1 with the planar element 19 and a component 20 (see FIG. 4). For this purpose, the connection section 5 has a first retaining element 6 and a second retaining element 7. The first retaining element 6 and the second retaining element 7 may alternatively be arranged separately on the contact section 2 without a common connection section 5.

[0038] The first retaining element 6 is adapted to engage in an opening 18 on the component 19, which opening is preferably formed as a borehole 18, so that the fastening dip 1 can not be pulled out of the borehole 18. The second retaining element 7 is suitable for engaging behind the planar element 19 in such a way that, by means of the fastening clip 1, a pressing force acts on a second side 25 of the planar element when the contact plane 3 lies on a first side 24 of the planar element 19. Thus, the fastening clip 1 is held preassembled on the planar element 19, even when the element is still not arranged on the component 20.

[0039] The first retaining element 1 is connected to the contact plane 3. The second retaining element 7 is connected to the pivot plane 4. The contact plane 3 is elastically connected to the pivot plane 4, so that the pivot plane 4 can be pivoted in the direction of the planar element 19, so that the second retaining element 7 can engage behind planar elements of different thicknesses. However, the second retaining element 7 is also elastic in itself, so that it is able to adapt its shape for this purpose.

[0040] As a result, the first retaining element 6 is stabilized against forces that act on the first retaining element 6 in the radial direction relative to the opening 18. The first retaining element 6 has a first leg 8, a second leg 9 and a connection element 10 between the first leg 8 and the second leg 9. At one end of the second leg 9, the first retaining element 6 has a first retaining section 11, which is adapted to engage in a thread groove 23 of a thread 21 or in a slot 23 which form a latching device 21 in the borehole 18. The first leg 8 has an indentation 12.

[0041] The second retaining element 7 comprises a first leg 13 and a second leg 14. At one end of the second leg 13 a second retaining section 15 is provided, which is adapted to exert a force on the second side of the planar element 19. The fastening clip 1 is composed of one piece of steel. The pivot plane 4 is spaced from the contact plane 3 by a spacer element 16.

[0042] FIG. 2 shows a schematic representation of the fastening clip 1 according to the invention according to FIG. 1 in a plan view. The contact section 2 has two contact planes 3. In the pivot plane 4 a groove 17 is provided. Shown are also the two spacer elements 16, which are provided at the pivot plane 3, the first retaining element 6, the second retaining element 7 and the second retaining section 15. The second retaining section 15 is tapered towards one end and rounded.

[0043] FIG. 3 shows a schematic representation of the fastening clip 1 according to the invention according to FIGS. 1 and 2 in a front view. In this case, the contact section 2 and the connection section 5 are shown. The contact plane 3, the pivot plane 4 and two spacer elements 16 are visible in the contact section 2. Only the first retaining element 6 with the indentation 12 is visible in the connection section 5.

[0044] FIG. 4 shows a schematic representation of the system according to the invention. The system comprises the fastening dip 1 according to the invention, which has already been described in detail above, the planar element 19 provided with at least one cut-out 22 and the component 20 on which the planar element 19 can be fixed by means of preferably a plurality of fastening clips 1 spaced apart from one another. A borehole 18 of the component 20 is shown with a fastening dip 1 received therein in a cross-sectional view. The fastening dip 1 holds the planar element 19 on the component 20, in which the borehole 18 is introduced. The borehole 18 has a thread 21 which is provided as a latching device 21. The fastening dip 1 reaches through a cut-out 22 in the planar element 19. This embodiment has no spacer elements 16. The fastening dip 1 engages with the first retaining element 6 in a thread groove 23 of thread 21, which serves as a latch, or in a corresponding slot 23, which is transverse to the axis of the opening or borehole 18. In this case, the first retaining element 6 rests with its corrugation or indentation 12 on an opposite side of the opening 18. The fastening dip 1 is thus firmly set in the borehole or opening 18 and can not be removed therefrom.

[0045] The planar element 19 has a first side 24 and a second side 25. The contact plane 3 of the fastening dip 1 rests on the first side 24. The second side 25 of the planar element 19 rests on the component 20. In this completely assembled state the second retaining element 7 can no longer engage behind the planar element 19, since the borehole 18 has a diameter which corresponds approximately to a diameter of the cut-out 22 of the planar element 19 and the fastening clip 1, upon being pressed into the borehole 18, has been moved so far that the angled upper part of the second retaining element 7 has moved so far to the left in the opening 22 that it has been disengaged from the second side 25 of the planar element 19.

[0046] The system according to the invention and the fastening clip preferably used therein are particularly advantageous for use for pre-assembly on insulating plates or insulating bodies for acoustic and/or thermal insulation in the automotive sector and for their subsequent final assembly on an automobile.

LIST OF REFERENCE NUMERALS

[0047] 1 fastening clip [0048] 2 contact section [0049] 3 contact plane [0050] 4 pivot plane [0051] 5 connection section [0052] 6 first retaining element [0053] 7 second retaining element [0054] 8 first leg of the first retaining element [0055] 9 second leg of the first retaining element [0056] 10 connection element [0057] 11 first retaining section [0058] 12 indentation [0059] 13 first leg of the second retaining element [0060] 14 second leg of the second retaining element [0061] 15 second retaining section [0062] 16 spacer element [0063] 17 slot [0064] 18 opening (borehole) [0065] 19 planar element [0066] 20 component [0067] 21 latching device (thread) [0068] 22 cut-out [0069] 25 23 latching arrangement (thread groove; slot) [0070] 24 first side of the planar element 19 [0071] 25 second side of the planar element 19