Device for fastening a vehicle component in and / or on a vehicle

Abstract

Device for fastening a vehicle component (28) in and / or on a vehicle, with - a sound insulation element (10) such as a bulkhead panel, a floor panel, a luggage compartment panel or an engine or component encapsulation or a wheel arch panel, wherein the sound insulation element (10) comprises a carrier layer (12) made of plastic material with a first side (14) and a second side facing away from it and a sound damping layer (13) molded onto the second side of the carrier layer (12) made of plastic material or of synthetic fiber or natural fiber material, wherein an anchoring recess (50) is formed in the carrier layer (12), which has an insertion opening (18) in the first side (14) of the carrier layer (12), to which a receiving space (44) bounded by the plastic material of the carrier layer (12) is connected, which is defined by a closed circumferential inner side (48) and a closed bottom surface (66), and - an anchoring element (24) for placement in the anchoring recess (50), wherein the anchoring element (24, 24', 24") - is designed in one piece with a vehicle component (28) to be attached to the carrier layer (12) of the sound insulation element (10) or - is designed in one piece with a retaining element (22) to which the vehicle component (28) to be attached to the carrier layer (12) of the sound insulation element (10) can be attached, or - can be passed through a through-opening (70) formed in the vehicle component (28) to be attached to the support layer (12) of the sound insulation element (10), wherein the anchoring recess (50) forms a The inner perimeter (48) has a constriction area (54) that at least partially narrows the receiving space (46) and a widening area (68) that extends towards the floor surface (66), wherein the anchoring element (24') has an anchoring shoulder (58) for engaging behind the constriction area (54) when the anchoring element (24') is received by the anchoring recess (50), and - a positioning element (26) that is formed integrally with the component to be attached to the carrier layer (12) of the sound insulation element (10) or integrally with a retaining element (22) to which the component to be attached to the carrier layer (12) of the sound insulation element (10) can be attached, wherein a positioning recess (52) is formed in the carrier layer (12) of the sound insulation element (10), which has an insertion opening (20) in the first side (14) of the carrier layer (12), to which a receiving space (44) bounded by the plastic material of the carrier layer (12) is connected, which is defined by a closed circumferential inner side (48) and a closed bottom surface (69), wherein the positioning element (26) and the anchoring element (24') can be inserted and / or used in their respective associated recesses when aligned with the positioning recess (52) and the anchoring recess (50), respectively, and wherein the carrier layer (12) has a recess (16) in which there are two insertion openings (18, 20), one of which insertion openings (18) belongs to an anchoring recess (50), while the other insertion opening (20) allows access to a positioning recess (52).

Description

[0001] The invention relates to a device for fastening a vehicle component in and / or on a vehicle.

[0002] Motor vehicles are equipped with soundproofing elements to dampen potential noise entering the vehicle. Examples of such soundproofing elements include bulkhead panels or floor panels that are installed or mounted in the vehicle body. Other examples of soundproofing elements include encapsulations for engines, compressors, or other noise-generating vehicle components.

[0003] Sometimes it is necessary to attach additional vehicle components to such soundproofing elements, either permanently or temporarily. The latter may be particularly necessary during vehicle assembly, for example, when a vehicle component is pre-mounted on a soundproofing element and can then be removed from the soundproofing element once the vehicle component is installed and placed elsewhere in the vehicle.

[0004] For example, DE 103 14 220 A1 discloses a cover for at least one component in the engine compartment of a motor vehicle. This cover comprises a support structure on which a sound-absorbing body is arranged, at least in part. The cover can be secured to a retaining element using a clamping mechanism. For this purpose, projections of the retaining element engage in complementary recesses in the cover.

[0005] From CN 2 04 124 078 U, a sealing element for a cavity of an automobile is known, which could also be used in ships, trains and buildings, furniture, and the like. For this purpose, a sound insulation sealing element for a cavity of an automobile is provided, comprising a thermal expansion material, a connector, and a positioning pin. One side of the thermal expansion material is a plane, and the other side has an irregular, curved surface. At least two blind holes are formed in the plane of the thermal expansion material. One end of the connector and one end of the positioning pin are inserted into each of these blind holes.

[0006] The object of the invention is to provide an improved device for fastening a vehicle component in and / or on a vehicle.

[0007] To achieve this object, the invention proposes a device for fastening a vehicle component in and / or on a vehicle according to claim 1. A device according to the invention for fastening a vehicle component in and / or on a vehicle thus comprises - a sound insulation element such as a bulkhead panel, a floor panel, a luggage compartment panel or an engine or unit enclosure or a wheel house panel, wherein the sound insulation element comprises a carrier layer comprising a plastic material with a first side and a second side facing away from this, and a sound damping layer formed on the second side of the carrier layer, also made of a plastic material or of synthetic fiber or natural fiber material, wherein an anchoring recess is formed in the carrier layer, which has an insertion opening in the first side of the carrier layer, to which a receiving space delimited by the plastic material of the carrier layer adjoins, which is defined by a closed circumferential inner side and a closed bottom surface, and - an anchoring element for receiving in the anchoring recess, wherein the anchoring element - is constructed in one piece with a component to be attached to the sound insulation element or - is designed in one piece with a holding element to which the component to be attached to the sound insulation element can be attached, or - can be guided through a through-opening which is formed in the component to be fastened to the sound insulation element, wherein the anchoring recess has a constriction region formed on the circumferential inner side, at least partially narrowing the receiving space, with a widened widening region adjoining it in the direction of the base surface, and wherein the anchoring element has an anchoring shoulder for engaging behind the constriction region when the anchoring element is received in the anchoring recess.

[0008] The fastening device for vehicle components according to the invention serves to fasten vehicle components to a sound insulation element, which in turn is usually attached to the vehicle body. The sound insulation element has a mass-spring system in a known manner and comprises a carrier layer, also referred to as a heavy or mass layer, made of a plastic material, on one side of which a sound-damping layer made of a sound-absorbing plastic material such as PU foam is molded. Alternatively, the sound-damping layer can comprise synthetic fiber or natural fiber material. An anchoring recess is formed in the carrier layer, which is shaped like a deep-drawn cup. The anchoring recess has an insertion opening in the first side of the carrier layer facing away from the sound-damping layer, which is adjoined by a receiving space delimited by the plastic material of the carrier layer and defined by a closed circumferential inner side and a closed base surface. The outer and bottom walls of the recess are therefore closed and consist of the plastic material of the carrier layer. In other words, the anchoring recess is designed like a bead.

[0009] The advantage of the proposed design of the anchoring recess with a closed shell or peripheral wall and bottom wall, i.e., as a blind hole, in the carrier layer, according to the invention, is of an acoustic nature, namely sound-damping; because the sound insulation element thus has no through-openings.

[0010] The fastening device according to the invention also includes an anchoring element for receiving in the anchoring recess. This anchoring element can be designed as a single piece with the vehicle component to be fastened to the sound insulation element. Alternatively, the anchoring element can also be designed as a single piece with a holding element, to which the vehicle component to be fastened can be attached. Finally, it is also possible for the vehicle component to be fastened to have a through-opening through which the anchoring element can be guided, whereby the vehicle component is then fixed to the sound insulation element when the anchoring element is received in the anchoring recess.

[0011] Anchoring elements with several barb-like interlocking structures are known, which, for example, in the form of flexible lamellae surround a shaft of the anchoring element.

[0012] According to the invention, the anchoring recess has a narrowing region that narrows the receiving space partially or on all sides, which is preferably formed on the inner circumference near the insertion opening. A widened widening region adjoins the narrowing region toward the base surface. This creates an undercut within the receiving space, which is engaged behind by an anchoring shoulder formed thereon when the anchoring element is received in the anchoring recess.

[0013] The interaction of the anchoring shoulder of the anchoring element with the transition from the narrowing to the widening area of ​​the anchoring recess ensures reliable securing of the anchoring element against accidental detachment from the anchoring recess. The narrowing area extends all around or partially along the inner circumference. The narrowing area is designed, for example, as a continuous or interrupted inner bead that protrudes inward from the inner circumference of the receiving space of the anchoring recess. Alternatively, the inner circumference of the receiving space can also have a recess, which then forms the widening area, with the narrowing area being located between the insertion opening and this recess. The widening area can also extend to the base surface if necessary, but this is not absolutely necessary.

[0014] Depending on which vehicle component is to be secured with the device according to the invention, it may be advantageous to provide an assembly aid that can then also perform another function when installed. In one embodiment according to the invention, a positioning aid is provided, so to speak, - that a positioning recess is formed in the carrier layer of the sound insulation element, which has an insertion opening in the first side of the carrier layer, to which a receiving space is connected, which is delimited by the plastic material of the carrier layer and is defined by a closed circumferential inner side and a closed bottom surface, - that a positioning element is provided which is designed as one piece with the component to be attached to the sound insulation element or as one piece with a holding element to which the component to be attached to the sound insulation element can be attached, and - that the positioning element and the anchoring element can be inserted and / or fitted into their respective associated recesses when aligned with the positioning recess or the anchoring recess.

[0015] In addition to the anchoring element, the device according to the invention therefore also comprises a positioning element, to which a positioning recess is assigned on the side of the sound insulation element. This positioning recess is in turn formed in the carrier layer of the sound insulation element, preferably in the same way as the receiving recess, as a bead or deep-drawn cup. The positioning recess requires no special configurations on the circumferential inner side of its receiving space. Accordingly, the positioning recess is also designed as a structure closed on its outer surface and its bottom surface. The insertion opening is in turn located on the side of the carrier layer opposite the sound-damping layer. Thus, the positioning recess is also designed as a blind hole, which, as already described above in connection with the anchoring recess, is acoustically advantageous.

[0016] The positioning recess ensures that the vehicle component to be attached is mounted in the correct orientation.

[0017] To prevent incorrect positioning of the component to be fastened, at least one of the two recesses (either the positioning recess or the anchoring recess) can be mechanically coded so that the positioning element can only be inserted into the positioning recess and / or the anchoring element can only be inserted into the anchoring recess. The interaction of the positioning element and the positioning recess not only aids assembly and supports the correct alignment of the vehicle component during assembly, but also ensures that the component is secured against rotation when installed.

[0018] In an advantageous embodiment of the invention, the mechanical coding or the different mechanical coding can be realized, for example, in that the anchoring element and the anchoring recess have a mutually identical cylindrical first cross-section, that the positioning element and the positioning recess have a mutually identical cylindrical second cross-section and that the size of the first cross-section is different from the size of the second cross-section.Alternatively, the mechanical coding can also be realized in that the anchoring element and the anchoring recess have a mutually identical first cross-sectional area, in that the positioning element and the positioning recess have a mutually identical second cross-sectional area and in that the second cross-sectional area is different from the first cross-sectional area or in that the second cross-sectional area is equal to the first cross-sectional area and is rotated relative to the second cross-sectional area.

[0019] In a further advantageous embodiment of the invention, it can be provided that the insertion opening of the anchoring recess has an opening edge and that the anchoring element has a peripheral flange with a peripheral edge region which projects beyond the edge of the insertion opening of the anchoring recess and thus covers the insertion opening of the anchoring recess in the state of the anchoring element received thereby.

[0020] In a similar embodiment, in another advantageous embodiment of the invention, it can be provided that the insertion opening of the positioning recess has an opening edge and that the positioning element has a peripheral flange with a peripheral edge region which projects beyond the edge of the insertion opening of the positioning recess and thus covers the insertion opening of the positioning recess in the state of the positioning element received thereby.

[0021] The fastening device according to the invention can be used not only on sound insulation elements of the aforementioned type. Alternatively, the sound insulation layer can consist exclusively of the carrier layer as a so-called mass layer, i.e., it can have no sound-damping layer. Furthermore, it is also possible for the carrier layer of a sound insulation element usable for the invention to have both a sound-damping layer and, for example, a carpet; in this embodiment, the carrier layer is located between the two other aforementioned layers. Depending on the application, either the sound-damping layer or the carrier layer can be applied to the vehicle body.

[0022] The invention is explained in more detail below using several exemplary embodiments and with reference to the drawings. In detail: Fig. 1 a plan view of the carrier layer of a sound insulation element with a perspective view of the component holding element, which in this case can be positioned in a recess within the carrier layer of the sound insulation element, Fig. 2 a perspective view of the underside of the holding element with an anchoring element and a positioning element, Fig. 3 a sectional view through the arrangement of sound insulation element and holding element attached to it for a vehicle component, Fig. 4 a variant of the fastening device according to the invention, in which an expansion anchor concept is used as the anchoring element, Fig. 5 shows a further variant of the fastening device according to the invention with a constriction area extending into the plane of the insertion opening of the anchoring recess and Fig. 6 a further variant of the fastening device according to the invention, in which the anchoring element is directly connected in one piece to the component to be fastened.

[0023] In Fig. Figure 1 shows a plan view of a sound insulation element 10 having a carrier layer 12 made of plastic material. The plastic material of the carrier layer 12 can, for example, have a Shore A hardness in the range of 66 to 90, and in particular in the range of 70 to 85. Suitable plastic materials for the carrier layer 12 include, for example, EVA / PE, PE, PP, EPDM, TPE, or TPO.

[0024] Related to the representation in Fig. 1, behind the carrier layer 12, there is a sound-damping layer 13 made of a preferably foamed sound-damping material, which may be, for example, a PU foam. This sound-damping layer is therefore located on the side of the carrier layer 12 that corresponds to the Fig. 1 shown first side 14 of the carrier layer 12.

[0025] According to the invention, in a depression 16 of the carrier layer 12, as in Fig. 1, two insertion openings 18, 20, of which one insertion opening 18 leads to an anchoring recess 50 (see Fig. 3), while the other insertion opening 20 provides access to a positioning recess 52 (see also Fig. 3) is possible.

[0026] In a corresponding manner, a holding element 22, which can be accommodated in the recess 16, is formed with a protruding anchoring element 24 and a likewise protruding positioning element 26. A vehicle component 28, which may be a smaller component unit, is located on the holding element 22.

[0027] The design of the anchoring element 24 and the positioning element 26 is more clearly shown in Fig. 2. The anchoring element 24 has a hollow, slotted shaft 30 in this embodiment, from which anchoring projections or lamellae 32 project circumferentially in the form of barbs. At the other end of the shaft 30, facing away from the free end 34, there is a preferably flexible circumferential flange 36, which covers the opening edge 40 of the insertion opening 18 with its circumferential edge region 38.

[0028] The positioning element 26 is also pin-shaped and has a shaft 42 which, for example, has a cross structure in cross section.

[0029] The insertion openings 18, 20 are designed and dimensioned differently with regard to their cross-sectional areas, so that the holding element 22 can only be inserted in the Fig. 1 can be attached and mounted to the sound insulation element 10.

[0030] In Fig. 3 shows the fastening situation in cross-section. The sound insulation element 10 has the heavy or carrier layer 12, in the first side 14 of which the insertion openings 18, 20 are formed. Adjoining both insertion openings 18, 20 on all sides, i.e., both circumferentially and at the bottom, are enclosed receiving spaces 44, 46, the circumferential inner sides 48 of which are formed by the material of the carrier layer 12. The anchoring recess 50 and the positioning recess 52, which adjoin the respective insertion openings 18 and 20, are formed like cups or caps in the carrier layer 12. The sound insulation element 10 rests against the vehicle body 49, as shown in Fig. 3 is indicated.

[0031] As shown by Fig. 3, the receiving space 46 of the anchoring recess 50 has a constriction region 54, which is formed on all sides or partially and circumferentially on the circumferential inner side 48 of the receiving space 46. In this exemplary embodiment, the constriction region 54 is designed as a bead 56 protruding inward into the receiving space 46. Such a structure of a receiving space 46 with what may be called an undercut can be produced by injection molding technology through forced demolding or through injection molds provided with a folding core. Adjoining the constriction region 54 toward the bottom surface 66 of the receiving space 46 is a widening region 68.

[0032] The positioning recess 52 is also closed on its bottom surface 69 and on its peripheral side. Both recesses, i.e., the anchoring recess 50 and the positioning recess 52, are thus designed as blind holes.

[0033] An anchoring shoulder 58, which is formed on the shaft 30 of the anchoring element 24 and protrudes radially therefrom and (in the installed state) points toward the insertion opening 18, serves to facilitate the interaction of the anchoring element 24 with the anchoring recess 50. This anchoring shoulder 58 can be formed as the lamella closest to the circumferential flange 36. However, this is not absolutely necessary.

[0034] In Fig. 4 shows an embodiment of a fastening device. If the Fig. 4 shown elements of the fastening device with those according to Fig. 3 are functional or structurally sound, they are in Fig. 4 are provided with the same reference numerals as in Fig. 3.

[0035] In the embodiment of the fastening device of the Fig. 4, only one anchoring element 24' is shown without an associated positioning element 26. Several such individual anchoring elements 24' can be used. The component that is to be fastened to the sound insulation element 10 is, for example, a cable or ventilation duct. This has a through-opening 60 in its duct wall 62, through which the anchoring element 24' can be guided and inserted into the anchoring recess 50 in the sound insulation element 10, which is aligned with the through-opening 60. In this exemplary embodiment, the anchoring element 24' can basically be constructed in the same way as the anchoring element 24 of the fastening device according to the Fig. 1 to 3. The difference is that the anchoring element 24' is not integral with another element (in the Fig. 1 to 3, this is the holding element 22).

[0036] In addition, Fig. 4 shows the variant in which the anchoring element 24' is designed as an expansion dowel. A core pin 64 can be seen, which can be inserted into the shaft 30 through the circumferential flange 36, which has a through-opening 70 and a circumferential edge region 38 (widened head of the anchoring element 24').

[0037] In Fig. 5 is a variant of the fastening device according to Fig. 4, in which the constriction region 54 is extended in terms of its axial depth. As shown in the Fig. 1 to 4, the narrowing area 54 is followed by a widening area 68 towards the bottom surface 66 of the anchoring recess 50 (see in particular the Fig. 3 and Fig. 4).

[0038] In Fig. 6 shows a further embodiment of the fastening device, in which the anchoring element 24" is again designed as an expansion dowel (as in the Fig. 4 and Fig. 5), but is designed as one piece with the vehicle component to be attached (similar to the Fig. 1 to 3). A through-opening 70 extends through the circumferential flange 36 with a circumferential edge region 38 of the anchoring element 24", which is aligned with the cavity in the shaft 30 of the anchoring element 24". The component to be fastened also has a through-opening 72, which is aligned with the through-opening 70. LIST OF REFERENCE SYMBOLS 10 Sound insulation element 13 Soundproofing layer 12 Carrier layer 14 one side of the carrier layer 16 trough 18 Insertion opening of the anchoring recess 20 Insertion opening of the positioning recess 22 Holding element 24 Anchoring element 24' anchoring element 24" anchoring element 26 Positioning element 28 vehicle component 30 Shaft of the anchoring element 32 slats 34 End of the shaft 36 circumferential flange 38 Circumferential edge area of ​​the circumferential flange 40 opening edge 42 Shaft of the positioning element 44 Receiving space of the anchoring element 46 Receiving space of the positioning element 48 inner circumference 49 Vehicle body 50 anchoring recess 52 Positioning recess 54 Narrowing area of ​​the anchoring recess 56 bulge 58 Anchoring shoulder 60 passage opening in duct wall 62 Canal wall 64 core pin 66 Bottom surface of the anchoring recess 68 Widening area of ​​the anchoring recess 69 Bottom surface of the positioning recess 70 Through hole in the anchoring element 72 Through opening in the vehicle component

Claims

[1] Device for fastening a vehicle component (28) in and / or on a vehicle, with - a sound insulation element (10) such as a bulkhead panel, a floor panel, a luggage compartment panel or an engine or unit enclosure or a wheel house panel, wherein the sound insulation element (10) comprises a carrier layer (12) comprising a plastic material with a first side (14) and a second side facing away from the latter, and a sound damping layer (13) formed on the second side of the carrier layer (12) and also made of a plastic material or of synthetic fibre or natural fibre material, wherein an anchoring recess (50) is formed in the carrier layer (12), which has an insertion opening (18) in the first side (14) of the carrier layer (12), to which a receiving space (44) delimited by the plastic material of the carrier layer (12) adjoins, which is defined by a closed circumferential inner side (48) and a closed bottom surface (66), and - an anchoring element (24) for receiving in the anchoring recess (50), wherein the anchoring element (24, 24', 24") - is designed in one piece with a vehicle component (28) to be fastened to the carrier layer (12) of the sound insulation element (10) or - is designed in one piece with a holding element (22) to which the vehicle component (28) to be fastened to the carrier layer (12) of the sound insulation element (10) can be attached, or - can be guided through a through-opening (70) which is formed in the vehicle component (28) to be fastened to the carrier layer (12) of the sound insulation element (10), wherein the anchoring recess (50) has a Constriction region (54) formed on the inner circumferential side (48) and at least partially narrowing the receiving space (46) with a widened widening region (68) adjoining it in the direction of the bottom surface (66), wherein the anchoring element (24') has an anchoring shoulder (58) for engaging behind the constriction region (54) when the anchoring element (24') is received in the anchoring recess (50), and - a positioning element (26) which is designed as one piece with the component to be fastened to the carrier layer (12) of the sound insulation element (10) or as one piece with a holding element (22) to which the component to be fastened to the carrier layer (12) of the sound insulation element (10) can be attached, wherein a positioning recess (52) is formed in the carrier layer (12) of the sound insulation element (10), which has an insertion opening (20) in the first side (14) of the carrier layer (12), adjoining a receiving space (44) delimited by the plastic material of the carrier layer (12) and defined by a closed circumferential inner side (48) and a closed bottom surface (69), wherein the positioning element (26) and the anchoring element (24') can be inserted and / or inserted into their respective associated recesses when aligned with the positioning recess (52) or the anchoring recess (50), and wherein the carrier layer (12) has a recess (16) in which two insertion openings (18, 20) are located, of which one insertion opening (18) belongs to an anchoring recess (50), while the other insertion opening (20) allows access to a positioning recess (52). [2] Device according to claim 1, characterized by in that the pairs of anchoring element (24') and anchoring recess (50) and positioning element (26) and positioning recess (52) are mechanically coded differently in order to prevent misalignment of the vehicle component (28) to be fastened to the carrier layer (12) of the sound insulation element (10) in its fastening state. [3] Device according to claim 2, characterized bythat the anchoring element (24') and the anchoring recess (50) have a mutually identical cylindrical first cross-section, that the positioning element (26) and the positioning recess (52) have a mutually identical cylindrical second cross-section and that the size of the first cross-section is different from the size of the second cross-section. [4] Device according to claim 2, characterized by that the anchoring element (24') and the anchoring recess (50) have a mutually identical first cross-sectional area, that the positioning element (26) and the positioning recess (52) have a mutually identical second cross-sectional area and that the second cross-sectional area is different from the first cross-sectional area or that the second cross-sectional area is equal to the first cross-sectional area and rotated relative to the second cross-sectional area. [5] Device according to one of claims 1 to 4, characterized by that the insertion opening of the anchoring recess (18) has an opening edge (40) and that the anchoring element (24") has a peripheral flange (36) with a peripheral edge region (38) which projects beyond the edge of the insertion opening (18) of the anchoring recess (50) and thus covers the insertion opening (18) of the anchoring recess (50) in the state of the anchoring element (24") received thereby. [6] Device according to one of claims 1 to 5, characterized by that the insertion opening of the positioning recess (20) has an opening edge (40) and that the positioning element (26) has a peripheral flange (36) with a peripheral edge region (38) which projects beyond the edge of the insertion opening (20) of the positioning recess (52) and thus covers the insertion opening (20) of the positioning recess (52) in the state of the positioning element (26) received thereby.

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