DE102016109760A1 - Fastener for attaching an element to be fastened to a carrier part of a vehicle with a reduced risk of corrosion - Google Patents

Abstract

A fastener (1) for fixing an element to be fastened to a support part of a vehicle (2), said fastener (1) comprising: - a head part (20) adapted to be fastened to the component to be fastened; A foot part (30) adapted to be fastened to the support part (2), at least one wing (50) connected to the foot part (30) via a coupling part (31) of the foot part (30), the wing (50) having a decoupling element (51) which has been attached to the base part (30) prior to assembly of the fastener (1) to the support part (2) and covers at least a part of the wing (50), such that the Decoupling element (51) contacts the carrier part (2) when the foot region (30) is fastened to the carrier part (2), and wherein the decoupling element (51) is made of a material which is softer than at least the material of the part of the blade (50 ) covered by the decoupling element (51). The invention further relates to a method for producing a corresponding fastener.

Description

The invention relates to a fastener to a fastened element, in particular a panel or a wiring harness, to a support member of a vehicle, preferably to secure a vehicle body.

According to the prior art WO 2014/110301 For example, a fastener includes a foot and a head having a plate to which the foot is connected, a wedge and a shank connecting the plate to the wedge, which has a back plate, a rim and flexible arms connecting the edge to the back plate ,

It is considered to be disadvantageous that in some cases when using a fastener according to the prior art, especially in the outer vehicle area, a risk of corrosion could exist. The object of the invention was therefore to reduce the risk of corrosion when using such a fastener for fastening a fastened element to a support member of a vehicle. This object is solved by the subject matters of the independent claims; advantageous embodiments are defined in the dependent claims.

• – einen Kopfteil, der eingerichtet ist, an die Verkleidung befestigt zu werden;
• – einen Fußteil, der eingerichtet ist, an das Trägerteil, bevorzugt über ein Loch oder eine Schiene in dem Trägerteil, befestigt zu werden;
• – mindestens einen Flügel, der mit dem Fußteil über einen Kupplungsteil des Fußteils verbunden ist, wobei der Flügel ein Entkopplungselement, bevorzugt eine Entkopplungsbeschichtung, aufweist, welches an den Fußteil vormontiert ist und zumindest einen, bevorzugt radial äußeren, Teil des Flügels bedeckt, so dass das Entkopplungselement das Trägerteil kontaktiert, wenn der Fußbereich an das Trägerteil befestigt ist, und wobei das Entkopplungselement aus einem Material ist, das weicher als zumindest das Material des Teils des Flügels ist, welcher durch das Entkopplungselement bedeckt ist.

The object is achieved in particular by a fastener for fastening an element to be fastened, preferably a lining or a wiring harness, to a support part of a vehicle, preferably a vehicle body, wherein the fastener comprises:

• A header adapted to be attached to the panel;
• A foot part adapted to be fastened to the support part, preferably via a hole or a rail in the support part;
• - At least one wing which is connected to the foot part via a coupling part of the foot part, wherein the wing has a decoupling element, preferably a decoupling coating, which is pre-assembled to the foot part and at least one, preferably radially outer, part of the wing covered, so that the decoupling element contacts the carrier part when the foot region is fastened to the carrier part, and wherein the decoupling element is made of a material that is softer than at least the material of the part of the wing that is covered by the decoupling element.

• – Herstellen, bevorzugt Gießen, eines Kopfteils, welcher eingerichtet ist, an das zu befestigende Element befestigt zu werden, und eines Fußteils, welcher eingerichtet ist an das Trägerteil, bevorzugt über ein Loch oder eine Schiene in dem Trägerteil, befestigt zu werden, und zumindest eines Flügels, welcher mit dem Fußteil über einen Kupplungsteil des Fußteils verbunden ist, wobei das Verfahren zusätzlich ein
• – Erzeugen und vor einer Montage des Befestigers an das Trägerteil erfolgendes Anbringen eines Entkopplungselements, bevorzugt einer Entkopplungsbeschichtung, bevorzugt mittels Umspritzen oder Anspritzen, an mindestens einen, bevorzugt radial äußeren, Teil des Flügels aufweist, sodass das Entkopplungselement das Trägerteil kontaktiert, wenn der Fußteil an das Trägerteil befestigt ist, und wobei das Entkopplungselement aus einem Material hergestellt, bevorzugt gegossen, wird, welches weicher als zumindest das Material des Teils des Flügels ist, welcher von dem Entkopplungselement bedeckt ist.

The object is further achieved in particular by a method for producing a fastener for fastening an element to be fastened, preferably a lining or a wiring harness, to a support part of a vehicle, preferably a vehicle body, the method comprising:

• - Manufacture, preferably casting, of a head part which is adapted to be fastened to the element to be fastened, and a foot part, which is adapted to the support part, preferably via a hole or a rail in the support part to be attached, and at least a wing which is connected to the foot part via a coupling part of the foot part, wherein the method additionally a
• - Produce and prior to mounting the fastener to the support part successful attachment of a decoupling element, preferably a decoupling coating, preferably by means of encapsulation or injection, at least one, preferably radially outer, part of the wing, so that the decoupling element contacted the support member when the foot part the support member is fixed, and wherein the decoupling element is made of a material, preferably molded, which is softer than at least the material of the part of the wing, which is covered by the decoupling element.

By this decoupling element, which covers the / the wing of the fastener, the support member is protected from damage, especially damage its corrosion protection layer, and the risk of corrosion protection is thus reduced. It has been found that, during vehicle life, hard contacts between the wing and the support member due to sustained vibration during driving result in such damage to the support member, thereby increasing the risk of corrosion. On the one hand, the decoupling element dampens such vibrations and therefore damps / decouples relative movements between the wing and the carrier part and, on the other hand, serves as a protective, soft surface which is not easy to damage the carrier part or its coating. In fact, the decoupling element preferably prevents any or most (preferably more than 50%, more preferably more than 80%) of contact between the hard material of the blade (s) of the fastener and the support part, e.g. the vehicle body surrounding the hole. Preferably, any or most (preferably more than 50%, most preferably more than 80%) of contact between the fastener is via the wing (s) and the support part, e.g. the vehicle body, on the soft material of the decoupling element. At the same time, the assembly of the fastener to the support member is not complicated because the decoupling element has been attached to the part of the wing before this assembly.

The fastener may for example be made of one or more of the following materials: metal, plastic. Anything in connection with Casting mentioned in this fastener is preferably injection molding, more preferably plastic injection molding.

The head part is used to connect the element to be fastened with the fastener. Various attachment principles may apply, e.g. a clip or flange, which is inserted into a rail of the panel.

The foot part may have more than one wing, preferably two or three or four wings. The foot part and the head part are preferably connected by means of an axial shaft of the fastener.

The decoupling element is preassembled on the foot part, which is preferably understood to mean that the decoupling element has been attached to the foot part before the fastener is or has been attached to the carrier part. As a result, a simple mounting is achieved on the support member. The decoupling element may e.g. a protective sleeve put on or put on the wing or, more preferably, a molded or sprayed decoupling coating.

The one or more vanes preferably have a free end and the decoupling element is disposed at or near the free end, or preferably completely surrounds the free end or a radially outer part of the free end. Preferably, at least two vanes face each other such that the hole or rail of the support member is contacted on two opposite sides and the fastener secures the member to be fastened to the support member in a more efficient manner. In the case in which the foot part has a plurality of wings, particularly preferably each wing, preferably at its free end and preferably at a radially outer part of the wing, at least partially, preferably completely, covered by the or another one decoupling element, so that the surface or a corrosion protection layer around the hole or the rail of the carrier part is well protected against scratches. The attachment of the decoupling element can be done by hand or machine assembly prior to mounting the fastener to the support member or more preferably in the course of generating the decoupling element, e.g. preferably by means of encapsulation of or injection molding on at least one, preferably radially outer, part of the wing.

The wing is preferably flexible so that the wing is brought closer to the remainder of the fastener while the fastener is inserted into the hole or rail and then expanded again.

The softer material is preferably one of the following: thermoplastic elastomer (TPE), thermoplastic starch (TPS), ethylene-propylene-diene rubber (EPDM).

Preferably, the one or more wings, the foot part and head part, if present, the shank are all made of the harder material, preferably in one piece, with the wings being at least partially covered by the soft material. The harder material is preferably one of the following: All common plastics for fasteners in the automotive industry as well as property-improving modifications / variants (e.g., glass fiber reinforced), metals and alloys.

In a further preferred embodiment according to the present invention, the decoupling element is a decoupling coating applied to the part of the wing. In a further preferred method according to the present invention, the decoupling element is produced and attached as a decoupling coating of the at least one part of the wing, preferably by means of encapsulation of the or molding on the at least one part of the wing.

As a result, a particularly easy to produce and easy to handle fastener is provided. Preferably, the free end of the blade has a step which forms a radial shoulder and an axial collar, and the decoupling coating covers the upper part of the radial shoulder and / or the radially outer part of the axial collar. By such a step, a particularly good adhesion of the decoupling coating is given.

In a further preferred embodiment according to the present invention, the fastener has a flange between the foot part and the head part. In a further preferred method according to the present invention, a flange of the fastener is made between the foot part and the head part, preferably molded by casting.

With this said flange a stop plate for limiting the insertion of the foot part is provided in the support member. Preferably, the flange has a shape which is larger than the shape of the hole or rail of the support part, so that only the wing of the foot part is pushed into the hole or rail.

Preferably, the flange is preferably cast, during the same manufacturing step, preferably casting step as the head part and the foot part made with the same material.

In a further preferred embodiment according to the present invention, the flange has a, preferably molded or before attachment of the fastener to the support member or automatenmontierte, sealing lip for sealing the flange against a surface of the support member, preferably against the surface around the hole or rail of the Support part around. In another preferred method according to the present invention, a sealing lip is attached or molded to the flange, preferably prior to assembly of the fastener to the support member, preferably by hand or machine mounting prior to attachment of the fastener to the support member, or by casting, especially preferably encapsulation of the flange or injection molding on the flange, is formed.

This further reduces the risk of corrosion. The sealing lip is preferably in contact with the carrier part, so that it also allows to avoid scratches on the carrier part. The sealing lip preferably covers the edge of the flange, preferably all around, so that it seals the flange against the surface around the hole or the rail of the support member. The sealing lip is preferably located on the side of the flange, which faces the foot part.

In a further preferred embodiment according to the present invention, the sealing lip and the decoupling element of the same material. In a further preferred method according to the invention, the sealing lip and the decoupling element are formed from the same material, preferably cast.

This can make the production more efficient, e.g. via 2K injection molding.

In a further preferred embodiment of the present invention, the sealing lip and the decoupling element are or were connected via a bridge. In a further preferred method according to the invention, the decoupling element and the sealing lip are poured and the material used for the decoupling element and the sealing lip passes from the sealing lip to the decoupling element or vice versa from the decoupling element to the sealing lip and forms a bridge.

Hereby, the sealing lip and the decoupling element can be formed both in a casting step with an injection point or injection points only on a sealing lip and decoupling element. The material then passes over the bridge to the other from the sealing lip and decoupling element. The bridge is thus an indicator that the advantageous method has been used.

In a further preferred method according to the present invention, the sealing lip and the decoupling element are both produced in the same production step, preferably casting step, preferably cast.

This saves time. Preferably, separate injection points are used for the decoupling element and the sealing lip in preferred casting; Alternatively, an injection point or injection points is used only on one of the sealing lip and decoupling element, as just described.

This casting step is preferably other than a casting step of the head part and the foot part. Preferably, the same mold is used in the casting step of the sealing lip and the decoupling element to form the sealing lip and the decoupling element. Preferably, a bridge is created by the injected material. This material bridge can then be cut away.

In another preferred method according to the present invention, the sealing lip and the decoupling element are formed in different production steps, preferably by casting steps.

This makes it possible (but not necessary) to use different materials for the sealing lip and the decoupling element in a simple manner.

In a further preferred embodiment according to the present invention, the vane has a free end and the material used for the decoupling element also continuously covers the vane between the coupling part and the decoupling element so that a connection of material used for the decoupling element (type) the coupling part connects with the decoupling element.

This fastener is easy to manufacture, since the injection point for the material used for the decoupling element can be arranged in a favorable position, preferably on the coupling part of the foot part, as described directly below.

Under a free end of the wing is preferably understood a radially outermost point of the wing, which can be pressed in the direction of the fastener axis. It is preferably the region of the wing which is braced in the fastened state with a certain bias in the hole or the rail of the support member. In the broadest sense, even such a radially outer extreme point is to be understood as a free end, which is connected to the shaft of the fastener via a plurality of webs of the wing (eg, axially upwards and downwards), ie not completely free, but just relatively free to move.

• – ein Herstellen, bevorzugt Gießen, eines freien Endes des Flügels, wobei das Entkopplungselement mittels Gießen erzeugt wird, wobei das für das Entkopplungselement verwendete Material, wenn es flüssig ist, auf den Kupplungsteil gespritzt und entlang des Flügels von dem Kupplungsteil in Richtung des freien Endes geführt wird.

In another preferred method according to the present invention comprises manufacturing, preferably casting, the foot part

• - Producing, preferably casting, a free end of the wing, wherein the decoupling element is produced by casting, wherein the material used for the decoupling element, when it is liquid, injected onto the coupling part and along the wing of the coupling part in the direction of the free end to be led.

This convenient location of the injection point results in a less complex tool design. At the location where the material is guided along the wing, when the material is liquid, it is preferable to form the joint which continuously penetrates the wing between the coupling part and the decoupling element, i. without interruption, covered. The compound (s.o.) is thus an indicator that this preferred method has been used.

In a further preferred embodiment according to the present invention, the foot part has a further wing which is connected to the foot part via the coupling part of the foot part and which has a further decoupling element, wherein the material used for the decoupling element and the further wing between the coupling part and the further decoupling element continuously covered, so that a further connection of material used for the further decoupling element (type) connects the coupling part with the further decoupling element.

This fastener is particularly well produced by injection molding, since a common injection point for the material used for the decoupling elements can be used, as described directly below.

In another preferred method according to the invention, another wing is produced, preferably cast, which is connected to the foot part via the coupling part of the foot part, and wherein, when the decoupling element is cast, also another decoupling element of the further wing is cast and wherein material used for the decoupling elements is injected via a common for both decoupling elements injection point, preferably on the coupling part.

This makes the tool for forming the decoupling elements even less complex. The common injection point is preferably located in the middle between both wings, preferably on one side of the wings, preferably on one side of the coupling part. Preferably, the two decoupling elements are arranged symmetrically and the injection point is on the axis of symmetry. Preferably, the sealing lip and the decoupling elements are formed separately, so that no material bridge is formed between them.

Embodiments of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:

1 is a conceptual overview of a fastener with two wings according to the invention,

2a is a conceptual overview of a fastener 1 wherein the fastener further comprises a flange with a sealing lip and bridges between the sealing lip and the decoupling coatings,

2 B is a side perspective view of the fastener of 2a ;

2c is an exploded perspective view of the fastener of the 2a .

2 B wherein the sealing lip, the bridges and the decoupling coatings are shown in perspective,

3a is a conceptual overview of a variant of the fastener of 2a C, wherein the sealing lip and the decoupling coatings are not connected by bridges,

3b is a perspective overview of the fastener of 3a wherein the wings are each covered by a compound,

3c is an exploded perspective view of the fastener of the 3a , b, wherein the sealing lip, the decoupling coatings and connections are shown in perspective.

1 shows a conceptual overview of a fastener according to the invention 1 with preferred two wings 50 . 50 ' , The fastener 1 has a headboard 20 on, which is adapted to be fastened to the element to be fastened, and a foot part 30 , which is adapted to the support part of the vehicle 2 to be attached. The fastener 1 preferably has at least two wings 50 . 50 ' on that with the foot part 30 via a coupling part 31 of the foot part 30 are connected, said wings 50 . 50 ' in each case a decoupling element 51 . 51 ' exhibit. The decoupling elements 51 51 ' are at the foot part 30 pre-assembled and made of a material which is softer than at least the material the part of the wings 50 . 50 ' which is due to the decoupling coating 51 . 51 ' is covered. The decoupling elements 51 . 51 ' cover at least part of the wings 50 . 50 ' so if the foot part 30 in the carrier part 2 is attached, the decoupling elements 51 . 51 ' in contact with the carrier part 2 are.

In addition, the fastener points 1 the following preferred features: the decoupling elements 51 . 51 ' are decoupling coatings 51 . 51 ' and are on the wings 50 . 50 ' sprayed; the carrier part 2 is a vehicle body 2 and the foot part 30 is set up, over a hole in the vehicle body 2 to be fastened; the wings 50 . 50 ' each have a free end 50.1 . 50.1 ' on and the decoupling coatings 51 . 51 ' are on or near the free ends 50.1 . 50.1 ' at a radially outer part of the free end; the wings 50 50 ' face each other so that the hole of the vehicle body 2 contacted on two opposite sides; the free ends 50.1 . 50.1 ' the wing 50 . 50 ' include a step which is a radial shoulder 50.1a . 50.1a ' and an axial collar 50.1b . 50.1b ' forms and the decoupling coatings 51 . 52 ' cover the upper (ie the headboard 20 facing) part of the radial shoulders 50.1a . 50.1a ' and the radially outer portion of the axial collar 50.1b . 50.1b ' - The shoulder and collar configuration is also in the drawings 2a -C and 3a -C shown, but not specifically numbered with reference numerals; the headboard 20 Used to connect the panel to the fastener by sliding it into a rail or groove of the panel.

2a shows a conceptual overview of the fastener 1 based on 1 , where the fastener 1 a flange 40 with a sealing lip 41 having, wherein the sealing lip 41 a shape or a diameter larger than the shape or the diameter of the hole of the vehicle body 2 has, so that it is the flange 40 against the area around the hole of the vehicle body 2 seals. The decoupling coatings 51 . 51 ' and the sealing lip 41 are made of the same soft material. The decoupling coatings 51 . 51 ' and the sealing lip 41 are each with a bridge 80 . 80 ' connected. The bridges 80 . 80 ' can be cut off afterwards.

The sealing lip 41 and the decoupling coatings 51 . 51 ' are formed by casting in the same casting step so that the same tools are used to mold them. For example, soft material becomes an injection point at the flange 40 for the formation of the sealing lip 41 injected and two (open) channels in the tool lead the material further to the free ends 50.1 . 50.1 ' the wing 50 . 50 ' to form the respective decoupling coating 51 . 51 ' and the material makes the bridges 80 . 80 ' ,

2 B shows a perspective overview of the fastener 1 out 2a , The bridges 80 . 80 ' between the sealing lip 41 and the decoupling coatings 51 . 51 ' are due to the shape of the sealing lip 41 not visible.

2c shows an exploded perspective view of the fastener 1 out 2a and 2 B wherein the soft material is shown in perspective so that the sealing lip 41 , the decoupling coatings 51 . 51 ' and the bridges 80 . 80 ' are clearly visible. The radially outer parts at the free ends 50.1 . 50.1 ' the wing 50 . 50 ' where the wings 50 . 50 ' through the decoupling coatings 51 . 51 ' are splashed over, are clearly visible. Likewise, the flange 40 without his sealing lip 41 shown.

3a shows a conceptual overview of a variant of the fastener 1 based on 2a -C, where the sealing lip 41 and the decoupling coatings 51 . 51 ' not by bridges 80 . 80 ' connected to each other.

The sealing lip 41 and the decoupling coatings 51 . 51 ' are made of the same material. The sealing lip 41 and the decoupling coatings 51 . 51 ' are formed by casting. They may be formed simultaneously (preferably) but separately via separate injection points, or they may be formed in different casting steps.

3b shows a perspective overview of the fastener 1 out 3a , wherein for the decoupling coatings 51 . 51 ' Material used the wings 50 . 50 ' between the coupling part 31 and the decoupling coatings 51 . 51 ' consistently covered, so that an appropriate connection 52 . 52 ' from that for the decoupling coatings 51 . 51 ' used material the coupling part 31 with the decoupling coatings 51 . 51 ' combines.

The material for forming decoupling coatings 51 . 51 ' is about the common injection point 32 on the coupling part 31 injected and, if it is liquid, along the wings 50 . 50 ' from the coupling part 31 in the direction of the decoupling coatings 51 . 51 ' at the free ends 50.1 . 50.1 ' guided.

3c shows an exploded perspective view of the fastener 1 of the 3a and 3b , wherein the soft material is shown in perspective, so that the sealing lip 41 , the connections 52 . 52 ' and the common injection point 32 are clearly visible.

LIST OF REFERENCE NUMBERS

1

 fasteners

2

 support part

20

 headboard

30

 footboard

31

 coupling part

32

 common injection point

40

 flange

41

 sealing lip

50

 wing

50 '

 wing

50.1

 free end

50.1 '

 free end

50.1a

 radial shoulder

50.1a '

 radial shoulder

50.1b

 axial collar

50.1b '

 axial collar

51

 decoupling element

51 '

 decoupling element

52

 connection

52 '

 connection

80

 bridge

80 '

 bridge

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 2014/110301 [0002]

Claims (17)

Fasteners ( 1 ) for fastening an element to be fastened to a carrier part of a vehicle ( 2 ), the fastener ( 1 ): - a headboard ( 20 ), which is adapted to be attached to the component to be fastened, - a foot part ( 30 ), which is adapted to the carrier part ( 2 ), - at least one wing ( 50 ), which is connected to the foot part ( 30 ) via a coupling part ( 31 ) of the foot part ( 30 ), characterized in that the wing ( 50 ) a decoupling element ( 51 ), which at the foot part ( 30 ) and at least part of the wing ( 50 ), so that the decoupling element ( 51 ) the carrier part ( 2 ) when the footer area ( 30 ) to the support part ( 2 ), and wherein the decoupling element ( 51 ) is made of a material which is softer than at least the material of the part of the wing ( 50 ), which by the decoupling element ( 51 ) is covered. Fasteners ( 1 ) according to claim 1, wherein the decoupling element ( 51 ) one on the part of the wing ( 50 ) applied decoupling coating. Fasteners ( 1 ) according to claim 1 or 2, wherein the fastener ( 1 ) a flange ( 40 ) between the foot part ( 30 ) and the head part ( 20 ) having. Fasteners ( 1 ) according to claim 3, wherein the flange ( 40 ) a sealing lip ( 41 ) for sealing the flange ( 40 ) against an area of the carrier part ( 2 ) having. Fasteners ( 1 ) according to claim 4, wherein the decoupling element ( 51 ) and the sealing lip ( 41 ) consist of the same material. Fasteners ( 1 ) according to claim 5, wherein the decoupling element ( 51 ) and the sealing lip ( 41 ) over a bridge ( 80 ) are connected or were. Fasteners ( 1 ) according to one of claims 1 to 5, wherein the wing ( 50 ) has a free end and that for the decoupling element ( 51 ) also used the wing ( 50 ) between the coupling part ( 31 ) and the decoupling element ( 51 ), so that a compound ( 52 ) for the decoupling element ( 51 ) used material the coupling part ( 31 ) with the decoupling element ( 51 ) connects. Fasteners ( 1 ) according to claim 7, wherein the foot part ( 30 ) another wing ( 50 ' ), which is connected to the foot part ( 30 ) via the coupling part ( 31 ) of the foot part ( 30 ) and the another decoupling element ( 51 ' ), wherein for the decoupling elements ( 51 . 51 ' ) also used the other wing ( 50 ' ) between the coupling part and the further decoupling element ( 51 ' ), so that another compound ( 52 ' ) for the further decoupling element ( 51 ' ) used material the coupling part ( 31 ) with the further decoupling element ( 51 ' ) connects. Method for producing a fastener ( 1 ) for fastening an element to be fastened to a carrier part of a vehicle ( 2 ), the method comprising: - producing a head part ( 20 ), which is adapted to be fastened to the element to be fastened, and a foot part ( 30 ), which is adapted to the carrier part ( 2 ) and at least one wing ( 50 ), which with the foot part ( 30 ) via a coupling part ( 31 ) of the foot part ( 30 ), characterized in that the method additionally - a generating and before a mounting of the fastener to the carrier part successively attaching a decoupling element ( 51 ) to at least part of the wing ( 50 ), so that the decoupling element ( 51 ) the carrier part ( 2 ) contacted when the foot part ( 30 ) to the support part ( 2 ), and wherein the decoupling element ( 51 ) is made of a material which is softer than at least the material of the part of the wing ( 50 ), which of the decoupling element ( 52 ) is covered. Method according to claim 9, wherein the decoupling element ( 51 ) as a decoupling coating of the at least one part of the wing ( 50 ) is generated and attached. A method according to claim 9 or 10, wherein a flange ( 40 ) of the fastener ( 1 ) between the foot part ( 30 ) and the head part ( 20 ) is formed. Method according to claim 11, wherein a sealing lip ( 41 ) on the flange ( 40 ) is attached or formed. The method of claim 12, wherein the sealing lip ( 41 ) and the decoupling element ( 51 ) are both produced in the same manufacturing step. A method according to claim 12 or 13, wherein the sealing lip ( 41 ) and the decoupling element ( 51 ) are molded from the same material. Method according to claims 13 and 14, wherein the decoupling element ( 51 ) and the sealing lip ( 41 ) are produced by casting and that for the decoupling element ( 51 ) and the sealing lip ( 41 ) used material from the sealing lip ( 41 ) to the decoupling element ( 51 ) or vice versa of that Decoupling element ( 51 ) to the sealing lip ( 41 ) and a bridge ( 80 ). Method according to one of claims 9 to 14, wherein the production of the foot part ( 30 ) comprises: - producing a free end ( 50.1 ) of the wing ( 50 ), wherein the decoupling element ( 51 ) is produced by casting, wherein for the decoupling element ( 51 ) used material, when it is liquid, on the coupling part ( 31 ) and along the wing ( 50 ) of the coupling part ( 31 ) towards the free end ( 50.1 ) to be led. The method of claim 16, wherein another wing ( 50 ' ), which is connected to the foot part ( 30 ) via the coupling part ( 31 ) of the foot part ( 30 ), and wherein when the decoupling element ( 51 ), also another decoupling element ( 51 ' ) of the further wing ( 50 ' ) and wherein for the decoupling elements ( 50 . 50 ' ) material via one for both decoupling elements ( 50 . 50 ' ) common injection point ( 32 ) is injected.

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