Fixing element and decoupling assembly

Abstract

A fixing element (10) and an accessory for connection to a vehicle body structure (400), comprising a decoupling assembly (100) including the fixing element (10), and a method for manufacturing and assembling the decoupling assembly (100).

Description

Technical Field

[0001] The present invention relates to a fixing element and a decoupling assembly including the fixing element for connecting to the body structure of a motor vehicle, and a method for manufacturing and assembling the decoupling assembly. Background Technology

[0002] To reduce noise generated during the operation of an internal combustion engine, it is important to decouple the flanged attachments at the engine block from engine block vibrations. This is achieved by using a decoupling element between the screw head of the fixing screw and the component held by the screw. This decoupling element can also be used to secure other, especially smaller, vehicle accessories to the vehicle, such as heat pumps or valves from pumps or motors to another component of the vehicle. Thus, by means of this decoupling between the accessory, such as a valve, and another vehicle component, interfering noise is not transmitted into the vehicle interior during operation.

[0003] The assembly of traditional decoupling components requires additional manufacturing time because nuts or screws must first be installed and then tightened. Furthermore, additional tools (bolt wrenches or torque wrenches) are required for this assembly process.

[0004] DE 10 2019 113 663 A1 relates to a spacer for a fixing device used to secure an assembly to a carrier member in a vibration-damping manner. The spacer has a base having a first flange region and a second flange region opposed in the longitudinal direction of the base, and a passage portion in which a fixing member connected to or to be connected to the carrier member can be accommodated at least partially. The base is designed as at least two pieces and has a first body component and at least one additional second body component, wherein the body components can be detachably connected to each other to form the base, and wherein, in the connected state, a gap region is provided between the first and second flange regions, by which the edge of a fixing hole constructed in the assembly can be accommodated at least partially.

[0005] DE 10 2009 017 806 A1 discloses a fixing element for securing a component to a carrier. The fixing element has an anchoring element that can be fixed to the carrier. Furthermore, a radial compensation element is provided to compensate for radial misalignment between the component and the anchoring element. Finally, the fixing element also has a retaining element for holding the component.

[0006] A fastening unit for securing fabric to a limb without the use of thread is known from DE 10 2016 113 797 A1. The fastening unit has: an anchor element that can be fastened to the limb; and a retaining element that can be coupled to the anchor element in order to allow the fabric segment to adhere to the limb, wherein the anchor element and the retaining element can be locked to each other and form a retaining area therebetween, in which the fabric segment can be accommodated.

[0007] DE 10 2019 111 078 A1 relates to a damping fixing device comprising two identical fixing units, each having a central first passage opening. Each fixing unit includes an assembly element and a damping element. The assembly element is configured as a disc with a central second passage opening, and an identical locking structure extends from a first side of each assembly element. The damping element is configured as a disc with a central third passage opening and is at least partially arranged in the central second passage opening of the assembly element. Due to this structure, the two fixing units can be fixed together with a first member arranged between them via their respective first sides facing each other using the identical locking structures of the corresponding assembly elements.

[0008] DE 10 2005 010 433 A1 relates to a damping support for securing a plate member in a manner decoupled from vibration and noise. The damping support comprises two support members made of an elastomeric material that hold the plate member in a region through an opening and through which a fixing member passes. The damping support has two structurally identical support members, each having at least one tooth and an equal number of tooth-engaging recesses in the region between the opening and a radial support portion along its periphery. The tooth-engaging recesses are arranged circumferentially adjacent to the one or more teeth and have surfaces that run in the opposite direction to the teeth.

[0009] DE 100 58 520 C1 discloses a fixing device for securing a disc-shaped component in a receiving channel of the component, wherein the fixing device is disposed in a hole in the component and in a through hole aligned with it in the wall of the receiving channel, wherein the diameter of the hole in the disc-shaped component is smaller than the diameter of the through hole in the receiving component. Two identical clips are provided, which can be inserted into the hole from opposite ends. Each clip has an approximately annular cylindrical section and a hollow handle. The annular cylindrical section disposed in the through hole of the wall has an approximately radially approximately annular shoulder that abuts against a turning side of the disc-shaped component. The handle has at least two circumferentially spaced legs extending through the hole in the disc-shaped component and the through hole in the other wall, wherein the gap between adjacent legs can accommodate the leg of another clip. The legs have radially extending sections on their outer sides that can engage with the wall of the hole in the disc-shaped component. The legs, which are arranged in a crisscross pattern when the clips are inserted into each other, are secured by a locking mechanism that works together to prevent them from coming apart.

[0010] WO 2010 022 841 A1 relates to a fixing device for fixing component B to component A in a manner that automatically compensates for tolerances in the distance (S) between component B and component A, the fixing device having the following features: a.) a receiving element and an adjusting element, the adjusting element being screwed together with the receiving element by a first threaded pair in a first helical direction; b.) a fixing screw that can be inserted through openings in the receiving element and the adjusting element, the fixing screw being screwed into the receiving element by a second threaded pair in a second helical direction opposite to the first helical direction and connected to the adjusting element by a separable linkage for rotating the adjusting element together with the fixing screw and thereby moving it to abut against component B; and c.) the adjusting element consisting of a linkage arranged non-rotatably and floatingly within a threaded element, thereby compensating for orientation errors of the fixing screw when inserted into the adjusting element.

[0011] US2,797,605 A discloses a two-piece fastening element made of a resilient plastic having a pair of identical fastening elements, each element comprising a head and a handle, wherein each handle comprises a plurality of handle segments laterally spaced apart from each other at a sufficient distance to accommodate a handle segment of another fastening element therebetween. Each handle segment includes a surface forming a handle periphery together with the other handle segments, wherein the handle segments have radial edges arranged at an angle to each other, and each radial edge having a plurality of toothed features oriented toward the head along the main portion of the handle length near the end of the handle segment spaced apart from the head. Each toothed feature has a face at the radial edge that is arranged at an acute angle to the longitudinal axis of the fastening element and points away from the head, to facilitate the insertion and engagement of the handle segment of the fastening element with the handle segment of the other fastening element. Summary of the Invention

[0012] In this context, the object of the present invention is to provide a fixing device for decoupling elements and a decoupling assembly for connecting accessories to the body structure of a motor vehicle, the decoupling assembly being simple to manufacture and capable of assembly with low component and time costs.

[0013] According to the present invention, this objective is achieved by a component having the features of claim 1, a decoupling component having the features of claim 6, and a method having the features of claim 10. The design and improvements of the invention are derived from the dependent claims, the specification, and the drawings.

[0014] The subject of this invention is a component configured to engage with a second identical component to form a fixed structure for a decoupling element used in an accessory for connection to the body structure of a motor vehicle. According to the invention, the body structure of the motor vehicle can be any area within the vehicle, such as the engine compartment, luggage compartment, or other areas such as the floor area, roof area, side trim area, or it can be other components, such as a technical bay, or, for example, a luggage compartment area. Here, depending on the vehicle's design, viewed in the direction of travel, the luggage compartment can be located in the front or rear area of ​​the vehicle.

[0015] The components according to the invention are made of thermoplastic. The components according to the invention are made of a rigid material and provide strength to the assembly. In one embodiment, the thermoplastic is polyamide (PA), polyamide 6 (PA6), or polyamide 66 (PA66), wherein glass fiber reinforced PA, PA6, or PA66 may also be used.

[0016] The component according to the invention includes a substrate having a central through-hole. In one embodiment, the substrate is circular. In another embodiment, the outer contour of the substrate is a polygon with an even number of corners, such as a polygon with four, six, or eight corners.

[0017] In one embodiment, the central through-hole is a circular opening. In another embodiment, the outer contour of the central through-hole is a polygon with at least three corners, such as a triangular, quadrilateral, pentagonal, hexagonal, or octagonal opening.

[0018] The substrate has at least two identical cylindrical wall segments arranged equidistantly on the upper side of the substrate along a circumference coaxial with the center of the substrate (and thus with the center of the central through-hole), and notches respectively arranged between the two cylindrical wall segments. Here, the length of the arc between the two cylindrical wall segments is at least equal to the length of the upper edge of the cylindrical wall segment. In one embodiment, the length of the arc between the two cylindrical wall segments is exactly equal to the length of the upper edge of the cylindrical wall segment.

[0019] Each cylindrical wall segment has a locking protrusion on its upper edge, which is configured to engage with a corresponding notch in the substrate of a second identical member, thus locking the two members together. If the length of the arc between the two cylindrical wall segments is the same as the length of the upper edge of the cylindrical wall segment of the member, then the gap between the cylindrical wall segments of the two members is filled by the corresponding cylindrical wall segment of the other member, thereby forming a closed hollow column. If the length of the arc between the two cylindrical wall segments is greater than the length of the upper edge of the cylindrical wall segment, then a gap remains between the cylindrical wall segments after engagement.

[0020] The columnar wall segments are identical in shape and arranged equidistantly from each other, such that the length of the arc between two columnar wall segments is at least equal to the length of the upper edge of the columnar wall segment. In one embodiment, the upper edge of the columnar wall segment has the same length as its lower edge. In other embodiments, the length of the upper edge of the columnar wall segment is less than the length of the lower edge, that is, the columnar wall segment tapers upwards.

[0021] In one embodiment, the component according to the invention has two identical and equidistantly arranged columnar wall sections. In another embodiment, the component is constructed to be mirror symmetrical, wherein the plane of symmetry extends through the vertical axis (Z-axis) of the component.

[0022] In another embodiment, the component according to the invention has more than two identical and equidistantly arranged columnar wall sections. In another embodiment, the component according to the invention has three identical and equidistantly arranged columnar wall sections. In yet another embodiment, the component according to the invention has four identical and equidistantly arranged columnar wall sections.

[0023] In one embodiment of the component according to the invention, the substrate has centering elements disposed at the edge of the through-hole between equidistant cylindrical wall sections.

[0024] Each cylindrical wall segment has a resilient element supported on the side facing the central through-hole. In one embodiment, the resilient element is arranged above the plane of the through-hole in the substrate. In one embodiment, the resilient element is a spring that extends parallel to the substrate. In one embodiment, the carrier structure has at least two resilient elements arranged at equal intervals. In another embodiment, the carrier structure has more than two resilient elements, such as three or four resilient elements.

[0025] The elastic element is configured to engage with the thread flank of the bolt when the bolt or coarse-threaded bolt is inserted into the through hole at the center of the component. Thus, the component can be fastened to the bolt without the need for tightening during assembly or decoupling. This fixing structure is simply pushed onto the bolt or coarse-threaded bolt. Locking in the thread flank is achieved by the elastic element radially arranged inside the fixing structure.

[0026] In one embodiment, the width of the central through-hole in the region of the elastic element is at least equal to or greater than the width of the elastic element. This allows the elastic element to be more easily demolded in the injection mold.

[0027] In one embodiment of the component according to the invention, the underside of the substrate has reinforcing ribs.

[0028] Decoupling assemblies, including decoupling elements and two identical components according to the invention, are also the subject of this invention. A decoupling assembly according to the invention comprises a decoupling element made of an elastomer and two identical components according to the invention. The decoupling element is made of a soft, elastic material and causes vibration decoupling of the fixed structure, thus reducing vibration and solid-borne sound. In one embodiment, the elastomer is ethylene propylene diene monomer rubber (EPDM), thermoplastic elastomer (TPE), or olefin-based crosslinked thermoplastic elastomer (TPV).

[0029] In one embodiment, the decoupling element has a cylindrical shape. In another embodiment, the decoupling element has a polygonal prism shape, such as a prism shape with quadrilateral, hexagonal, or octagonal base faces. In one embodiment, the decoupling element has a circumferential groove on its outer surface, the groove being configured to lock into the edge of a notch in the support and secure the decoupling element within the notch.

[0030] The decoupling element has a central cylindrical channel whose diameter is at least equal to the outer diameter of the hollow column formed by the cylindrical wall section of the fixed structure. The diameter can also be larger. The resulting gap between the outer diameter of the cylindrical wall section and the inner diameter of the decoupling element further facilitates decoupling. The length of the central channel is equal to the height of the cylindrical wall section of the fixed structure, that is, the length of the hollow column of the fixed structure.

[0031] In the decoupling assembly according to the invention, the decoupling element surrounds a hollow column formed by a columnar wall section of a fixing structure. The substrate of the fixing structure contacts the upper and lower sides of the decoupling element and secures the decoupling element in the decoupling assembly.

[0032] A method for decoupling the vibration of an accessory located in the body structure of a motor vehicle is also the subject of this invention. In this method, a decoupling element, made of an elastomer and having a central cylindrical channel, is introduced into a notch in the support of the accessory and fastened therein, for example, locked to the edge of the notch. Subsequently, two identical components according to the invention are inserted from opposite sides of the notch in the support of the accessory into the central cylindrical channel of the decoupling element and locked to each other in the formation of a decoupling assembly. Here, the locking protrusion of the first component engages with the corresponding notch of the second component, and the locking protrusion of the second component engages with the corresponding notch of the first component. The decoupling assembly is then pushed onto a bolt located in the body structure of the motor vehicle. Thus, the elastic element of the decoupling assembly engages with the threaded side of the bolt and fastens the decoupling assembly. According to the invention, the bolt can also be designed as a coarse-thread bolt.

[0033] Here, the body structure can be any area of ​​the vehicle, such as the engine compartment, luggage compartment, or any other area of ​​the vehicle, such as the floor area, roof area, side trim area, or it can be other components, such as a technical bay, or in the form of a luggage compartment area.

[0034] The accessories to be decoupled and fixed are components located in the vehicle, such as valves, electrically driven water pumps, sensors, controllers, or pipelines.

[0035] During assembly, the decoupling assembly is simply inserted using bolts or coarse-threaded bolts, where an elastic element made of plastic is held in place by the threaded side of the bolt within the decoupling assembly. No torsion stop is needed here because the decoupling element, pressed against the bracket, generates a frictional torque through surface pressure, preventing the element from disengaging on its own (e.g., due to vibration excitation during operation). To assemble separately from the bracket side (and before insertion), the two halves of the decoupling assembly's fixing structure are inserted into each other within the cylindrical channel at the center of the decoupling element, where the locking protrusion of the corresponding half locks into a notch at the bottom of the corresponding half.

[0036] Compared to existing decoupling elements, the decoupling assembly according to the present invention saves spacer bushings, gaskets, and nuts or screws for each decoupling component. Assembly of the decoupling assembly is simplified, and its lightweight nature is achieved due to its plastic construction. During assembly, inserting the decoupling assembly instead of tightening nuts or screws results in reduced manufacturing time. Furthermore, the use of a torque wrench to tighten nuts or screws is eliminated. Various small parts and assembly tools can be saved during assembly. Other advantages and design features of the invention are apparent from the description and drawings.

[0037] Of course, the features described above and will be explained below can be applied not only in the corresponding combinations given, but also in other combinations or individually, without departing from the scope of the invention. Attached Figure Description

[0038] The invention is schematically illustrated in the accompanying drawings according to embodiments, and the invention is further described with reference to the accompanying drawings. Wherein:

[0039] Figure 1 A schematic diagram illustrating one embodiment of the components according to the present invention is shown;

[0040] Figure 2 A lower view showing one embodiment of the component according to the invention;

[0041] Figure 3 A schematic diagram of two components according to the invention inserted together is shown;

[0042] Figure 4 A longitudinal section of a decoupled assembly comprising two components according to the invention is shown;

[0043] Figure 5 The working steps (assembly steps) of the method according to the present invention are shown. Detailed Implementation

[0044] Figure 1An embodiment of the component 10 according to the invention is shown. The shown component 10 can be inserted into a second identical component 10. The component 10 is made of a rigid thermoplastic with or without a glass fiber content, such as PA, PA6, PA66, etc.

[0045] Component 10 includes a substrate 12 having a central through-hole 11. In the illustrated embodiment, the substrate 12 is circular, and the central through-hole 11 is an elongated opening with a circular central portion. In another embodiment, the outer contour of the substrate 12 is a polygon with an even number of corners, such as four, six, or eight corners. The central through-hole 11 may also have a polygonal contour with at least three corners, such as a triangular, quadrilateral, pentagonal, hexagonal, or octagonal contour.

[0046] On the upper side of the substrate 12, there are two cylindrical wall sections 14 on a circumference coaxial with the center of the through hole 11. In the illustrated embodiment, the through hole 11 extends from the base of one cylindrical wall section 14 to the base of the other cylindrical wall section 14. The cylindrical wall sections 24 are identical in shape and arranged equidistant from each other, such that the length of the arc between the two cylindrical wall sections 14 is equal to the length of the upper edge of the cylindrical wall section 14. In the illustrated embodiment, the length of the upper edge of the cylindrical wall section 14 is less than the length of the lower edge, that is, the cylindrical wall section 14 tapers upwards. In other embodiments, the upper edge of the cylindrical wall section 14 has the same length as its lower edge.

[0047] A first notch 15 is provided in the substrate 12 between each of the two cylindrical wall sections 14; and each cylindrical wall section 14 has a locking protrusion 16 on its upper edge. The locking protrusion 16 is configured to engage with the corresponding first notch 15 of the same second member 10 when the second member is pushed onto the first member 10, thereby locking the two members 10 together. At this time, the gap between the cylindrical wall sections 14 of the two members 10 is filled by the corresponding cylindrical wall sections 14 of the other member 10, thereby forming a closed hollow cylinder.

[0048] A second notch 19 is present in the substrate 12 on the rear side of each cylindrical wall section 14. The notch 19 simplifies the manufacture of component 10 in the injection molding process by avoiding undercuts / recesses—which would otherwise require additional sliders in the injection mold. However, the component can also be manufactured without the notch 19.

[0049] On the upper side of the substrate 12, elastic elements 13 are respectively arranged on the side of each cylindrical wall section 14 facing the through hole 11. The elastic elements 13 are configured to engage with the threaded side of the bolt 300 when the bolt 300 is introduced into the through hole 11. The illustrated embodiment has two elastic elements 13, which are arranged on opposite sides of the through hole 11. In the illustrated embodiment, the elastic elements are arranged above the through hole 11. In the illustrated embodiment, the elastic elements 13 are designed as tongue springs extending parallel to the substrate 12.

[0050] In the illustrated embodiment, a centering element 17 is arranged between elastic elements 13 at the edge of the through hole 11 on the upper side of the substrate 12. This centering element guides a bolt 300, which passes through the through hole 11 in the center of the member 10 and prevents it from getting stuck.

[0051] In the illustrated embodiment, component 10 is configured to be mirror symmetrical, wherein the plane of symmetry extends through the vertical axis (Z-axis) of component 10.

[0052] Figure 2 A view of one embodiment of the component 10 according to the invention is shown below.

[0053] Component 10 includes a substrate 12 having a central through-hole 21. In the illustrated embodiment, the substrate 12 is circular, and the central through-hole 21 is an elongated opening with a circular central portion.

[0054] In the view below, the elastic element 13 and the locking protrusion 16 are clearly visible. The elastic element and the locking protrusion are arranged in the cylindrical wall section 14, which is not visible in the figure, and are located above the plane of the substrate 12. The first notch 15 and the second notch 19 in the substrate 12 are also visible. A reinforcing rib 18 is arranged on the underside of the substrate 12, which increases the rigidity of the member 10.

[0055] Figure 3 An assembly is shown consisting of two interlocking members 10 according to the invention. Locking protrusions 16 of the two members 10 engage with corresponding first notches 15 of the other member 10, locking the two members 10 together. The columnar wall sections 14 of the two members 10 form a closed hollow column.

[0056] Figure 4A longitudinal section through a decoupling assembly 100 is shown, comprising two interlocking members 10 according to the invention and a decoupling element 30. The decoupling element 30 is made of a soft, elastic material, such as EPDM, TPE, or TPV. The two parts 10, 30 of the decoupling assembly 100 have different functions. The rigid part 10 serves as a carrier structure and provides strength to the assembly 100, while the soft part 30 causes vibration decoupling between the support 200 and the members 10 and serves to dampen vibrations and solid-borne noise. The decoupling element 30 surrounds a hollow column formed by the cylindrical wall section 14 of the interlocking members 10. If a bolt 300 is inserted into an opening at the center of the decoupling assembly 100, a centering element 17 guides the bolt and prevents jamming. An elastic element 13 engages in the threaded side of the bolt 300 and thereby secures the decoupling assembly 100 to the bolt 300.

[0057] Figure 5 The working steps of the method according to the invention for vibratory decoupling of a bracket 200 connected to a vehicle body structure 400 are shown.

[0058] The bracket 200 for the accessory is shown in the upper left of the figure, which has a notch 210. First, two identical decoupling elements 30 are introduced into the notch.

[0059] As shown in the upper right of the figure, two identical components 10 according to the invention are then inserted from opposite sides through the opening in the center of the decoupling element 30 and the notch 210 of the support 200 and locked together to form the decoupling assembly 100.

[0060] The lower right of the figure shows the assembly of the bracket 200 at the vehicle body structure 400. For this purpose, the bracket 200 is simply pushed onto the bolt 300 provided at the body structure 400. At this time, the elastic element 13 included in the decoupling assembly 100 engages in the thread side of the bolt 300, thereby fastening the bracket 200 to the bolt 300 without the need for additional components or other working steps.

[0061] The results of the assembly process are shown in the lower left corner of the diagram.

[0062] The body structure 400, to which bolts 300 are attached, may be, for example, part of the engine compartment or part of the vehicle's technical bay. For example, after mounting bracket 200, the technical bay can accommodate a set of maintenance tools by means of bracket 200. For example, a valve for cooling, for example, a controller, can be fixed on bracket 200 in the technical bay using component 10 according to the invention.

[0063] List of reference numerals in the attached diagram:

[0064] 10 components

[0065] 11 Through Holes

[0066] 12 substrate

[0067] 13 Elastic elements

[0068] 14. Columnar wall section

[0069] 15 First Gap

[0070] 16 Locking protrusion

[0071] 17 centering elements

[0072] 18. Strengthen the ribs

[0073] 19 Second Gap

[0074] 30 Decoupling Components

[0075] 100 Decoupling Components

[0076] 200 brackets

[0077] 210 Gap

[0078] 300 bolts

[0079] 400 Body Structure

Claims

1. A component (10) made of thermoplastic plastic, the component being configured to engage with a second identical component (10) and a decoupling element (30) made of an elastomer to form a decoupling assembly (100) for an accessory connected to the vehicle body structure of a motor vehicle, the component comprising: i) A substrate (12) having a central through hole (11). ii) At least two identical cylindrical wall sections (14) are arranged equidistantly from each other on a circumference coaxial with the center of the through hole (11) on the upper side of the substrate (12), each of the at least two cylindrical wall sections having at least one elastic element (13) on the side facing the through hole (11), the at least one elastic element being configured to engage with the thread side of the bolt (300) when the bolt (300) is introduced into the through hole (11). Among them, the length of the arc between the two cylindrical wall sections (14) is at least equal to the length of the upper edge of the cylindrical wall section (14). Each cylindrical wall section (14) has a locking protrusion (16) on its upper edge, which is configured to engage with a corresponding notch (15) of a second identical member (10) and lock the two members (10) together. iii) Gap (15) arranged between the two columnar wall sections (14). The elastic element is designed as a tongue spring extending parallel to the substrate (12), and the width of the central through hole in the region of the elastic element is at least equal to or greater than the width of the elastic element.

2. The component (10) according to claim 1, wherein the component has more than two columnar wall sections (14).

3. The component (10) according to claim 1 or 2, between the equidistant columnar wall sections (14), the component has a centering element (17) arranged at the edge of the through hole (11).

4. The component (10) according to claim 1 or 2, wherein, The thermoplastic is polyamide (PA), polyamide 6 (PA6), or polyamide 66 (PA66).

5. The component (10) according to claim 1 or 2, wherein the component is manufactured by injection molding.

6. The component (10) according to claim 4, wherein, The thermoplastic is glass fiber reinforced polyamide (PA), polyamide 6 (PA6), or polyamide 66 (PA66).

7. A decoupling assembly (100) for an accessory at a vehicle body structure (400), the decoupling assembly comprising a decoupling element (30) made of an elastomer and two identical components (10) according to any one of the preceding claims.

8. The decoupling component (100) according to claim 7, wherein, The elastomer is ethylene propylene diene monomer rubber (EPDM), thermoplastic elastomer (TPE), or olefin-based crosslinked thermoplastic elastomer (TPV).

9. The decoupling component (100) according to claim 7 or 8, wherein, The decoupling element (30) has a central cylindrical channel.

10. The decoupling component (100) according to claim 7 or 8, wherein, The decoupling element (30) has a surrounding groove on its outer side.

11. A method for decoupling the vibration of an accessory at a vehicle body structure (400), wherein a decoupling element (30) made of an elastomer and having a central cylindrical channel is introduced into a notch (210) of a bracket (200) of the accessory and fastened thereto, and then two members (10) according to any one of claims 1 to 6 are inserted from opposite sides of the notch (210) of the bracket (200) of the accessory into the central cylindrical channel of the decoupling element (30) and locked to each other in the formation of a decoupling assembly (100), and then the decoupling assembly (100) is pushed onto a bolt (300) provided at the vehicle body structure (400), whereby the elastic element (13) of the decoupling assembly (100) engages in the threaded side of the bolt (300) and the decoupling assembly (100) is fastened.

Images