Crimped assembly allowing the attachment of a seal.

Abstract

The invention relates to an assembly (1) of two sheets (3), respectively forming a bodywork element (4) and a lining (5), the sheets (3) each extending between a respective inner face (6) and outer face (7), the lining (5) being assembled on the element (4) so ​​that the inner faces (6) are arranged opposite one another, the element (4) and the lining (5) being joined along a common periphery (8) by a crimping (9) in which the element (4) covers a crimping zone (10) of the outer face (7) of the lining (5), the assembly (1) comprising a rim (11) projecting from the crimping zone (10) and the lining (5), the rim (11) extending along a part of the common periphery (8), designed to be introduced into a groove (12) for fixing a seal (13) sealing to ensure the fixing of the seal (13). (Figure 1)

Description

Title of the invention: Crimping assembly allowing the fixing of a sealing joint.

[0001] The technical field concerns sheet metal assemblies by crimping and motor vehicles having such assemblies.

[0002] For car manufacturers, the quality of their vehicles' finish and their aesthetic aspects are essential to stand out from other brands. Therefore, manufacturers are making many efforts to constantly improve these areas.

[0003] In this context, certain body parts, such as the engine hood, are provided with seals to protect against the intrusion of water, snow or dust into an area to be protected. Thus, the engine hood of a vehicle is sometimes equipped with a seal extending along a seam formed between the hood skin and its lining. To date, the sealing gaskets are often attached using adhesive or fixing clips placed on the lining.

[0004] In the case of using adhesive, assembly is long, imprecise and requires significant retouching time when the joint has been incorrectly positioned.

[0005] When fixing clips are used, they are expensive and difficult to install. Furthermore, installing clips can cause musculoskeletal problems for the people responsible for assembly in the long term.

[0006] Furthermore, and in all cases, the assembly of the seal requires adapting the vehicle assembly line to the management of the adhesive and / or the fixing clips.

[0007] Thus, the current fixing of a seal on a body part often generates additional production costs.

[0008] Also, there is a need for a solution that makes it possible to do away with the adhesive and / or clips used for fixing a seal to a bodywork part.

[0009] The present invention aims to overcome the problems set out above. In this technical context, one aim of the present invention is to provide an assembly without adhesive and / or fixing clip on which a sealing gasket is easily fixed.

[0010] To this end, the present invention relates to an assembly of sheets for a vehicle body comprising at least two sheets, respectively forming a bodywork element and a lining, the sheets each extending between a respective inner face and an outer face, the lining being assembled on the bodywork element so that the respective inner faces are arranged opposite one another, the bodywork element and the lining being joined to one another, along a common periphery, by a crimping extending over at least a portion of the common periphery and in which the bodywork element covers a crimping zone of the outer face of the lining, the assembly comprising a sheet metal edge projecting from the crimping zone and the outer face of the lining, the edge extending along at least a portion of the common periphery, the sheet metal edge being designed to be introduced into a fixing groove of a sealing gasket to ensure the fixing of the gasket over at least a portion of the common periphery.

[0011] The invention also relates to a motor vehicle having at least one assembly according to the invention.

[0012] Thus, the assembly according to the invention makes it possible to ensure the mounting of a seal thanks to the rim which is formed during the crimping of the bodywork element and the lining. The assembly therefore makes it possible to do without adhesive and clips while allowing precise and reproducible fixing of the seal. The rim is simple to produce during crimping, for example, by a stamping operation.

[0013] According to one embodiment of the assembly, the rim projects from the lining in a manner substantially orthogonal to the outer face of the lining.

[0014] In one embodiment of the assembly, the flange forms a profile having an L-shaped cross-section.

[0015] According to one possibility, the edge is made in one piece with the lining or the bodywork element.

[0016] According to another possibility, the rim is formed from a third sheet metal crimped between the inner faces of the bodywork element and the lining.

[0017] In one embodiment, the assembly comprises a sealing gasket forming a profile delimiting a fixing groove, the rim being introduced into the fixing groove, the gasket extending over at least part of the common periphery.

[0018] Advantageously, the seal is formed by injection of at least two plastic materials.

[0019] According to one possibility, the bodywork element forms an engine hood skin.

[0020] The invention will be better understood upon reading the detailed description which follows, given solely as a non-limiting example and made with reference to the attached drawing in which:

[0021] [Fig-1] [Fig.l] represents a cross-sectional view of an assembly according to the invention.

[0022] An assembly 1 of sheets according to the invention, illustrated in [Fig.l], is designed to equip a vehicle body 2, partially illustrated in [Fig.l]. The assembly 1 comprises at least two sheets 3, respectively forming a bodywork element 4 and a lining 5. In the example illustrated in the figure, the bodywork element 4 is an engine hood skin, the lining 5 a hood lining.

[0023] The sheets 3 each extend between a respective inner face 6 and an outer face 7. In the assembly 1, the lining 5 is assembled on the bodywork element 4 so that the respective inner faces 6 are arranged opposite one another. The bodywork element 4 and the lining 5 are then joined to one another, along a common periphery 8, by a crimping 9 extending over at least a portion of the common periphery 8 and in which the bodywork element 4 covers a crimping zone 10 of the outer face 7 of the lining 5. As illustrated in the figure, the crimping 9 is formed by a U-shaped bend of the bodywork element 4 on the lining 5.

[0024] As illustrated in the figure, the assembly 1 further comprises a sheet metal rim 11 projecting from the crimping zone 10 and the outer face 7 of the lining 5. The rim 11 extends along at least a portion of the common periphery 8. The sheet metal rim 11 is designed to be introduced into a groove 12 for fixing a sealing gasket 13, illustrated in the figure, to ensure the fixing of the gasket 13 on at least a portion of the common periphery 8.

[0025] According to one possibility, the rim 11 is integral with the lining 5 or the bodywork element 4, for example in the form of an extension. Alternatively, the rim 11 is formed from a third sheet metal crimped between the inner faces 6 of the bodywork element 4 and the lining 5.

[0026] Advantageously, the rim 11 projects from the lining 5 in a manner substantially orthogonal to the outer face 7 of the lining 5. For example, the rim 11 forms a profile having an L-shaped cross-section. One branch of the L projects from the crimping zone 10 while the other branch extends, for example, in a manner substantially parallel to the outer face 7 of the lining 5.

[0027] As illustrated in the figure, the sealing gasket 13 has a fixing groove 12 formed in a profiled body 14 from which a sealing lip 15 extends. For example, the groove 12 has a cross-section that has a shape complementary to that of the cross-section of the rim 11, in this case L-shaped, in order to be able to accommodate the rim 11. The lip 15 is sized to come into contact with the rest of the body 2, when the assembly 1 is mounted on the body 2, to ensure sealing between the rest of the body 2 and the assembly 1.

[0028] According to one possibility, the sealing gasket 13 is obtained by extrusion of an elastomer. It is possible to form the gasket 13 by extrusion of two different materials. For example, the profiled body 14 being made of a material distinct from that of the lip 15.

[0029] Thus, the assembly 1 makes it possible to ensure the mounting of the sealing gasket 13 thanks to the rim 11 which is formed during the crimping of the bodywork element 4 and the lining 5. The assembly 1 therefore makes it possible to do without adhesive and clips while allowing precise and reproducible fixing of the sealing gasket 13. The rim 11 is simple to produce since it is integrated into the crimping 9.

[0030] The invention is not limited to the embodiment of the sheet metal assembly described above, only by way of example, but other embodiments can be designed by those skilled in the art without departing from the scope and scope of the present invention.

Claims

Claims

1. Assembly (1) of sheets for a vehicle body (2) comprising at least two sheets (3), respectively forming a bodywork element (4) and a lining (5), the sheets (3) each extending between a respective inner face (6) and outer face (7), the lining (5) being assembled on the bodywork element (4) so ​​that the respective inner faces (6) are arranged opposite one another, the bodywork element (4) and the lining (5) being joined to one another, along a common periphery (8), by a crimping (9) extending over at least a portion of the common periphery (8) and in which the bodywork element (4) covers a crimping zone (10) of the outer face (7) of the lining (5), the assembly (1) comprising a sheet metal rim (11) projecting from the crimping zone (10) and the outer face (7) of the lining (5), the rim (11) extending along at least part of the common periphery (8),the sheet metal edge (11) being designed to be introduced into a groove (12) for fixing a sealing gasket (13) to ensure the fixing of the gasket (13) on at least part of the common periphery (8).,

2. Assembly (1) according to claim 1, characterized in that the rim (11) projects from the lining (5) substantially orthogonally to the outer face (7) of the lining (5).

3. Assembly (1) according to claim 1 or 2, characterized in that the rim (11) forms a profile having an L-shaped cross-section.

4. Assembly (1) according to one of claims 1 to 3, characterized in that the rim (11) is made of the same material as the lining (5) or the bodywork element (4).

5. Assembly (1) according to one of claims 1 to 3, characterized in that the rim (11) is formed from a third sheet metal crimped between the inner faces (6) of the bodywork element (4) and the lining (5).

6. Assembly (1) according to one of claims 1 to 5, characterized in that it comprises a sealing joint (13) forming a profile delimiting a fixing groove (12), the rim (11) being introduced into the fixing groove (12), the joint (13) extending over at least part of the common periphery (8).

7. Assembly (1) according to claim 6, characterized in that the joint (13) is formed by injection of at least two plastic materials.

8. Assembly (1) according to one of claims 1 to 7, characterized in that the bodywork element (4) forms an engine hood skin.

9. Motor vehicle having at least one assembly (1) according to one of claims 1 to 8.

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