Fastening system

Abstract

Fastening system (1) for the detachable fastening of a covering part (K) to a structural component, characterized in that the fastening system (1) comprises at least one receiving element (3) that can be fastened to the structural component, at least one connecting element (4) that can be brought into a receiving opening (6) of the receiving element (3), and at least one fastening element (5) that extends through the covering part (K) at least in regions and opens into the connecting element (4), wherein at least the connecting element (4) is made of plastic, wherein the covering part (K) is fastened to the connecting element (4) by means of the at least one fastening element (5), wherein the fastening element (5) is designed as a socket pin, wherein the socket pin can be secured in its mounted position by means of a securing element (24) against slipping out of the connecting element (4).

Description

The invention relates to a fastening system for the detachable fastening of a cooler screen to a structural component, according to the preamble of claim 1.In motor vehicles, cladding parts, such as the underbody cladding, the wheel arch shell or a radiator shroud, are usually fastened via a connecting arrangement which provides for a direct fastening of the cladding part to a structural component of the motor vehicle, for example the radiator bracket or the bumper. For example, the connecting arrangement comprises at least one metal connecting means, for example a steel screw, and a receiving part, for example a magnesium component, which contacts the connecting means. However, in practice, particular problems arise here with regard to the corrosion problem of magnesium components in contact or with regard to the corrosion properties of magnesium components in contact with steel components.The publication DE 102 53 177 A1 discloses an arrangement of a planar component on a carrier.It is the object of the invention to design a fastening system for the detachable fastening of a cladding part in such a way that corrosion between individual magnesium-containing connecting partners or connecting partners manufactured from magnesium, for example between a radiator bracket and a steel screw, can be avoided.This object is achieved according to the invention by the characterizing features of claim 1. Further advantageous features are contained in the dependent claims.The fastening system according to the invention is characterized in that the fastening system comprises at least one receiving element which can be fastened to the structural body, at least one connecting element which can be brought into a receiving opening of the receiving element, and at least one fastening element which passes through the cooler screen at least in regions and opens out into the connecting element, wherein at least the connecting element is made of plastic. The connecting element made of plastic, which is a component manufactured by injection molding, for example, prevents the direct contact of two corrosive components with each other, in that the connecting element is arranged between the components that are basically at risk of corrosion, namely the receiving element and the fastening element. It is of course likewise conceivable for the receiving element and / or the fastening means likewise to be produced from plastic. It is likewise conceivable to form a part of the structural body as a receiving element or to form the structural body and the receiving element in one piece.For example, it can be provided that the connecting element can be clipped or latched into the receiving element or into the receiving opening. As a result, a very rapid assembly or disassembly of the connecting element can occur if necessary. In addition, the assembly or disassembly process of the connecting element into or from the receiving opening of the receiving element can be carried out almost completely without tools.One exemplary embodiment provides that the connecting element can have a substantially rectangular cross section. In principle, however, the cross section can be designed almost arbitrarily, deviating from this, as long as the functional principle of the connecting element is maintained. The cross section of the connecting element is preferably designed to be complementary in shape to the receiving opening in the receiving element.Another exemplary embodiment provides that the connecting element can have a respective latching nose with insertion slopes on at least two end sides opposite one another in the axial longitudinal extension. The insertion slopes permit easier insertion into the receiving opening of the receiving element. For example, the edge of the receiving opening can also be beveled at least in regions.For example, the latching noses can engage behind the receiving opening of the receiving element at least in regions, whereby the connecting element is supported on the edge of the receiving opening and essentially fixed. This effect can be enhanced in that the latching noses can have resilient properties at least in regions. Thus, the resilient latching noses can move slightly towards one another when being introduced into the receiving opening, whereby the cross section in this region of the connecting element is slightly reduced. After the latching noses have assumed their latching position, a reliable fixing of the connecting element in the receiving opening is achieved, also due to the spring action of the latching noses.A preferred exemplary embodiment provides that a support surface operatively connected to the receiving element or the latching noses can be provided on at least one end face of the connecting element. For example, two end faces can be provided with latching noses, while a support surface is provided on each of the two other end faces. After the connecting element has assumed its end or latching position in the receiving opening, the supporting surfaces bear substantially parallel on the inner surface of the receiving element and ensure a substantially accurately fitting or play-free seat of the connecting element in the receiving element.After the connecting element has assumed its latching position in the receiving element, the covering part can be fixed or fastened to the connecting element by means of the at least one fastening element, which reaches through the covering part at a corresponding opening, at least in regions, and opens out in the interior of the connecting element. In principle, any number of fastening elements (substantially as many as connecting elements are provided) can be provided. The fastening element is designed as a plug bolt, wherein the plug bolt can be secured in its end position (assembly position) by means of a securing element against slipping out of the connecting element. It is of course also conceivable to use another fastening element, which is basically of any desired design, for example a screw or the like.For example, the securing element can be designed in the manner of a clamp, a clip or a nut.The fastening system is designed such that it fails in a controlled manner when a force is applied from below, i.e. for example when it is placed on a curbstone edge, as a result of which damage to the structural part, for example the cooler bracket, is reliably prevented.An exemplary embodiment of the invention is illustrated in the drawings and described in more detail below.The following are shown: FIG. 1 shows the essential components of the fastening system in a perspective individual illustration; FIG. 2 shows the fastening system in the mounting position; FIG. 3 shows a section in the X direction through the mounted fastening system in a light perspective illustration; FIG. 4 shows a section in the X direction through the mounted fastening system according to. FIG. 3 is a slightly enlarged view; FIG. 5 shows a section in the Y direction through the mounted fastening system in a slightly perspective illustration.FIG. 1 shows the essential components of the fastening system 1 in a perspective individual illustration. The fastening system 1 comprises a receiving element 3 fastened to or to a structural body 2, here a cooler bracket, a connecting element 4 and a fastening element 5.Two end faces 7 and 8 with the latching noses 9 and 10 are provided on the essentially rectangular connecting element 4, while the support surfaces 13 and 14 are provided on the two other end faces 11 and 12. Due to the extended paired incisions 15 and 16, the latching noses 9 and 10 have essentially resilient properties.FIG. 2 shows the fastening system 1 in the mounting position. The connecting element 4 made of plastic is introduced into the receiving opening 6 of the receiving element 3 until the latching noses 9 and 10 latch in.The latching noses 9 and 10 engage with the corner regions 17 and 18 behind the upper side 19 of the receiving element 3 and thereby latch in the receiving opening 6. The corner regions of the connecting element 4 come to rest in the corner regions of the receiving opening 6. The secure seating of the connecting element 4 in the receiving opening 6 of the receiving element 3 results on the one hand from the exact fit behind the latching noses 9 and 10 on the upper side 19 of the receiving element 3 and on the other hand from the simultaneous support of the supporting surfaces 13 and 14 on the inner side 20 of the receiving element 3.FIG. 3 shows a section in the X direction through the mounted fastening system 1 in a light perspective illustration.FIG. 4 shows a section in the X direction through the mounted fastening system 1. FIG. 3 is a slightly enlarged view. The cooler screen K, which is schematically partially illustrated, is penetrated by the shank 22 of the fastening element 5 at an opening 21 provided for this purpose and thus fixes the cooler screen K on the connecting element 4.The shank 22 of the fastening element 5 opens out in the interior of the connecting element 4 and is secured or fixed by a securing element 24 under which a base element 23 is placed.The securing element 24 is designed in the manner of a clamp and essentially tilts on the shank 22 of the fastening element 5.FIG. 5 shows a section in the Y direction through the mounted fastening system 1 in a light perspective illustration. The cooler screen K fixed by the fastening element 5 can be clearly seen.The fastening system 1 shown here with the connecting element 4 made of plastic can reliably prevent the reaction of a material with its environment, for example between the radiator bracket and a steel screw, which causes a measurable change in the material and can lead to an impairment of the function of a component or system.

Claims

Fastening system (1) for the releasable fastening of a cladding part (K) to a structural component, characterized in that the fastening system (1) comprises at least one receiving element (3) which can be fastened to the structural component, at least one connecting element (4) which can be brought into a receiving opening (6) of the receiving element (3), and at least one fastening element (5) which passes through the cladding part (K) at least in regions and opens out in the connecting element (4), wherein at least the connecting element (4) consists of plastic, wherein the cladding part (K) is fastened to the connecting element (4) by means of the at least one fastening element (5), wherein the fastening element (5) is designed as a plug bolt, wherein the plug bolt can be secured in its mounting position by means of a securing element (24) against slipping out of the connecting element (4).Fastening system according to claim 1, characterised in that the connecting element (4) can be clipped into the receiving opening (6).Fastening system according to either of Claims 1 and 2, characterized in that the connecting element (4) has a rectangular cross section.Fastening system according to one of Claims 1 to 3, characterized in that the connecting element (4) has in each case one latching nose (9, 10) with insertion slopes on at least two end faces (7, 8) which are opposite one another in the axial longitudinal extent.Fastening system according to Claim 4, characterized in that the latching noses (9, 10) engage behind the receiving opening (6) of the receiving element (3) at least in regions.Fastening system according to either of Claims 4 and 5, characterized in that the latching lugs (9, 10) have resilient properties.Fastening system according to one of Claims 1 to 6, characterized in that a supporting surface (13, 14) which is operatively connected to the receiving element (3) is provided on at least one end side (11, 12) of the connecting element (4).Fastening system according to one of Claims 1 to 7, characterized in that the securing element (24) is designed as a clamp, a clip or a nut.

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