Sealing device under the windshield of a motor vehicle

Abstract

The invention provides a sealing device (16) for a motor vehicle windshield, the sealing device comprising: a main wall (26) with a sealing edge (28), the sealing edge having a first face (30), a second face (32), a through-cut (48); a seal (34) with an adhesive surface (36) bonded to the sealing edge (28), an opposite surface (38) to the adhesive surface, the seal having a first section (40) bonded to the first face, a second section (42) bonded to the second face; the first section and the second section being bonded through the through-cut. At the through-cut, the sealing device (16) comprises a holding protrusion (56) against the opposite surface of the second section so that the second section (42) is held against the first section (40) through the through-cut (48). Figure to be published with the abstract: Figure 2

Description

Title of the invention: Sealing device under the windshield of a motor vehicle

[0001] The invention relates to sealing in a motor vehicle passenger compartment. The invention relates to maintaining a motor vehicle seal. The subject of the invention is a motor vehicle sealing device. The subject of the invention is also a motor vehicle.

[0002] Under the windshield, a motor vehicle has a dashboard that covers various equipment including a front apron. The front apron forms a separation between the passenger compartment and the front compartment, also called the front compartment. In operation, certain air flows pass through the front apron and rise between the windshield and the front edge of the dashboard, also called the dashboard nose.

[0003] These parasitic air flows manifest themselves in the form of whistling sounds perceptible by passengers. The intensity of the whistling sounds increases with speed. They constitute noise nuisances which penalize the perceived quality of the vehicles. In addition, they degrade the treatment of the air injected into the passenger compartment, so that the quantity of energy required for air treatment increases to comply with a predefined setpoint.

[0004] In order to reduce these nuisances, it is known to install a seal between the windshield and the dashboard. Such a seal contributes to the acoustic comfort of the vehicle.

[0005] Document FR3018484B1 presents an acoustic seal for a motor vehicle dashboard. The seal is made of cellular foam. It is arranged between the windshield, the soundproofing apron of the engine compartment of said vehicle and said dashboard. The seal extends substantially in the lateral direction of said vehicle and comprises a cavity receiving a bulge located at the free end of a first arm of the nose of said dashboard. A lower portion extends in cross-section below said cavity and is applied against said apron, as well as an upper portion extending in cross-section above said cavity and which is applied against said windshield.

[0006] Document FR3118752B1 presents a motor vehicle comprising equipment. The equipment comprises a wall, comprising a first end portion having internal and external faces, and an adhesive seal, comprising a second end portion having a face provided with an adhesive ensuring its bonding to the external and internal faces of the first end portion by folding. The first end part comprises at least one through hole allowing local bonding of the face of the second end part to itself. The seal is folded at the ends of the first end part, which allows its sealing to be extended transversely. Thanks to the bonding through the through hole, the fixing of the seal is improved. However, there is a need to further improve this fixing. Indeed, a bonded seal remains liable to detach in the long term.

[0007] Mounting the seal requires a step of pinching the seal at the through hole. This step remains simple and is carried out manually. It requires a certain precision, both in terms of position and the pinching force applied. There is therefore a need to simplify the fixing of the seal.

[0008] The invention aims to address at least one of the problems or drawbacks encountered in the prior art. In particular, the invention aims to optimize the attachment of a seal of a motor vehicle equipment. The invention also aims to optimize the sealing, durability, and ease of attachment of a motor vehicle equipment with a seal for a motor vehicle.

[0009] According to a first aspect, the invention proposes a sealing device for a motor vehicle, the sealing device comprising: a main wall with a sealing edge, the sealing edge having a first face, a second face opposite the first face, a through cut connecting the first face to the second face; a seal with an adhesive surface bonded to the sealing edge, a surface opposite the adhesive surface, the seal having a first section bonded to the first face, a second section bonded to the second face; the first section and the second section being bonded through the through cut; remarkable in that at the through cut, the sealing device further comprises a holding protrusion against the opposite surface of the second section so that the second section is held against the first section through the through cut.

[0010] It will be understood that the holding protrusion blocks the second section in the glued position, despite its stiffness tending to move it away from the second face.

[0011] The invention ensures that the second section is held in position relative to the through-cut, and therefore that it is bonded to the first section. Thus, the sealing device is durable. The seal remains effective over the long term. In addition, the invention ensures effective bonding of an adhesive seal, for example a dashboard seal of a motor vehicle. As a result, the sound insulation of the passenger compartment of a vehicle is guaranteed, as is the perceived quality of said vehicle. At the same time, the invention makes it possible to dispense with the presence of a quality control aimed precisely at ensuring the effectiveness of the bonding of the seal, thus contributing to lower the cost of manufacturing a motor vehicle.

[0012] Preferably, the seal comprises a first thickness against the first face, a second thickness against the holding protrusion, the second thickness being less than the first thickness.

[0013] Preferably, the sealing edge comprises a first side joined to the main wall, a second side with a rim opposite the first side, the rim extending from the second side towards the opposite of the holding protrusion.

[0014] Preferably, the sealing edge comprises a main plane, the holding protrusion being at a distance from the through cutout perpendicular to the main plane.

[0015] Preferably, the sealing edge is inclined relative to the main wall.

[0016] Preferably, the retaining protrusion comprises a retaining tab.

[0017] Preferably, the holding protrusion is parallel to the sealing edge.

[0018] Preferably, the sealing edge comprises a main elongation; the holding protrusion comprises a first length along the main elongation; the through cut-out comprises a second length less than or equal to the first length.

[0019] Preferably, the sealing gasket comprises a foam body.

[0020] Preferably, the body is made of semi-closed cellular foam.

[0021] Preferably, the sealing joint comprises a bent section connecting the first section to the second section; the second section comprises a free end at a distance from the through-cut and / or the holding protrusion.

[0022] Preferably, the equipment comprises a spacing between the second face and the holding portion, and the sealing gasket comprises a thickness greater than the spacing.

[0023] Preferably, the sealing edge projects relative to the main wall.

[0024] Preferably, the sealing edge is at a distance from the through cutout per pendicular to the second face.

[0025] Preferably, the sealing edge is inclined relative to the main wall.

[0026] Preferably, the sealing edge comprises a first segment between the bent section and the through cut, and a second segment extending from the through cut opposite the first segment; the first segment being shorter than the second segment.

[0027] Preferably, the through cut is through the sealing edge.

[0028] Preferably, the through cut splits the sealing edge.

[0029] Preferably, the sealing joint comprises an angled section connecting the first section to the second section.

[0030] Preferably, the seal comprises a mutual bonding zone of the first section to the second section through the through cut.

[0031] Preferably, the second section is glued to the second face on either side of the through cutout.

[0032] Preferably, the second section is between the holding protrusion and the through cutout.

[0033] Preferably, the second section is shorter than the first section.

[0034] Preferably, the retaining protrusion projects relative to the main wall and / or the sealing edge.

[0035] Preferably, the holding protrusion comprises a first area, the through cut-out comprises a second area greater than or equal to the first area.

[0036] Preferably, the holding protrusion is on the side of the second face.

[0037] According to another aspect, the invention provides equipment for a motor vehicle, the equipment comprising: a main wall, a sealing edge projecting from the main wall, the sealing edge having a first face, a second face opposite the first face, a through cutout through the sealing edge; the equipment also comprises a seal with an adhesive surface bonded to the sealing edge, the seal having a first section bonded to the first face, a second section bonded to the second face; the first section and the second section being bonded through the through cutout; remarkable in that the equipment further comprises a protrusion for holding the seal, the second section being between the holding protrusion and the through cutout so that the second section is held against the first section through the through cutout.

[0038] According to another aspect, the invention proposes a motor vehicle comprising a sealing device, remarkable in that the sealing device is in accordance with the invention.

[0039] Preferably, the motor vehicle comprises a windshield against the seal; and / or the main wall delimits a conduit of an air treatment system.

[0040] According to another aspect, the invention proposes a method for assembling a sealing device for a motor vehicle; remarkable in that the sealing device is in accordance with the invention; and in that the method comprises the steps: a) providing a main wall with a sealing edge; b) placing a sealing gasket against the sealing edge by gluing the adhesive surface against the first face and against the second face, and by placing the second section against the holding protrusion; c) pressing against the first section at the through-cut towards the holding protrusion.

[0041] Preferably, in step b) installation, the second section of the sealing joint is compressed between the second face and the retaining protrusion.

[0042] Each characteristic introduced by the expression “preferably” given in relation to one of the aspects of the invention applies to all the other aspects of the invention.

[0043] The invention will be well understood and other aspects and advantages will appear clearly on reading the description which follows, given with reference to the figures appended and listed below.

[0044] [Fig.l] is a front view of a motor vehicle according to the invention.

[0045] [Fig.2] shows a front view of a vehicle sealing device at car according to the invention.

[0046] [Fig. 3] is a cross-section of a sealing device for a motor vehicle, according to the invention.

[0047] [Fig.4] is a diagram of a method of assembling a motor vehicle sealing device according to the invention.

[0048] In the following description, the term "comprise" is synonymous with "include" and is not limiting in that it allows the presence of other elements in the motor vehicle or other steps in the method to which it relates. It is understood that the term "comprise" includes the terms "consist of". The terms "external" and "internal" will designate respectively that which is oriented towards the outside of the vehicle and towards the inside of the vehicle.

[0049] In the present description, the term "longitudinal", the term "longitudinally", the term "transverse", and the term "transversely" are used according to the reference frame of the vehicle, in the mounting configuration. The term "longitudinal" corresponds to the main direction of movement of the vehicle. The term "transverse" corresponds to a direction perpendicular to the main direction of movement of the vehicle. The term "front" refers to the main direction of movement of the vehicle. The term "rear" designates the opposite of the front of the vehicle.

[0050] The X axis represents the longitudinal direction, the Y axis represents the transverse direction, and the Z axis represents the vertical direction of the motor vehicle. These three axes define a direct trihedron whose orientation is preserved throughout the figures.

[0051] In the present description, the ranges of values ​​include the limits which delimit them.

[0052] In the present description, the equalities between the values ​​are not to be understood in the strict sense insofar as each equality authorizes a variation of at most 10%, preferably at most 5%, more preferably at most 2%, between these values.

[0053] In the present description, the term “vertical” and the term “horizontal” are not not to be understood in the strict sense of the term. Indeed, they authorize an inclination of at most 20°, preferably at most 10°, more preferably at most 5°, even more preferably at most 2°; compared to the strict sense of these terms.

[0054] In this description, the technical characteristics are defined in the mounting configuration of the sealing device, unless explicitly mentioned otherwise.

[0055] Throughout the description, the different figures use the same reference signs to designate identical or similar entities.

[0056] [Fig.l] represents a motor vehicle 10 according to the invention. The motor vehicle 10 comprises energy storage means and at least one motor (not shown) adapted to drive said motor vehicle 10.

[0057] The motor vehicle 10 comprises a structure 12. The structure 12 forms an outer body, or even a main frame of the motor vehicle. The structure 12 delimits different compartments of the motor vehicle 10, including the passenger compartment 14, the cargo compartment, the engine compartment (not shown). The structure 12 may be formed from an assembly of stamped sheets welded to each other.

[0058] The structure 12 connects different parts of the motor vehicle 10 including the openings. The structure 12 forms a mounting support for the powertrain, the suspension systems, the steering system, the braking systems.

[0059] The passenger compartment 14 is intended to accommodate the occupants (not shown) of the motor vehicle 10. The passenger compartment 14 houses at least one seat. The structure 12 supports various openings providing access to the passenger compartment 14 or to other compartments. In the front part, the passenger compartment 14 is delimited by a sealing device 16, which may include a dashboard. The sealing device 16 is a transverse piece of equipment. It extends transversely over the entire width of the passenger compartment 14. The dashboard accommodates various control members of the motor vehicle, as well as display devices. The sealing device 16 extends vertically under a windshield 18. Said windshield 18 closes the passenger compartment 14, vertically at a distance from the dashboard.

[0060] A front apron 20 (shown in dotted lines) separates the passenger compartment 14 from the engine compartment. The sealing device 16 is at a distance from the front apron 20. The front apron 20 partially forms the structure 12. It advantageously comprises an insulating layer, for example felt. The front apron 20 contributes to the safety of the vehicle by restricting the intrusion of the engine block in the event of a frontal collision.

[0061] The sealing device 16 comprises a main wall 26 which forms a front end of said sealing device 16. The main wall 26 extends longitudinally dinally behind the front apron 20. It is vertically at a distance from the windshield 18.

[0062] In order to ensure a close junction between the sealing device 16 and the windshield 18, allowing acoustic insulation of the passenger compartment 14, the main wall 26 comprises a sealing edge 28. The sealing edge 28 extends the main wall 26 towards the windshield 18. The sealing edge 28 comprises a first face 30 and a second face 32. It may be a sealing flange. The first face 30 is opposite the windshield 18.

[0063] The motor vehicle further comprises an air treatment system 24. The air treatment system 24 is capable of cooling and heating the air sent into the passenger compartment. It is capable of drying the air blown towards the windshield 18. The main wall 26 delimits a conduit of the air treatment system 24.

[0064] The motor vehicle may, for example, be a private motor vehicle or a utility motor vehicle.

[0065] [Fig.2] shows a lateral end of a sealing device 16 for a motor vehicle. The motor vehicle may correspond to that shown in relation to [Fig.l].

[0066] The main wall 26 of the dashboard comprises a sealing edge 28, which delimits said main wall 26 towards the windshield (not shown for reasons of clarity). According to one embodiment of the invention, the sealing edge 28 is inclined relative to the main wall 26. It projects relative to the main wall 26. It comprises fixing means. The sealing edge 28 is offset relative to the main wall 26. The sealing edge 28 generally comprises a strip of material, extending in a rectilinear or substantially arcuate manner in order to match the concave shape of the windshield.

[0067] The sealing edge 28 comprises a first face 30 and a second face 32 opposite each other along its thickness. It comprises a through cutout 48 connecting the first face 30 to the second face 32. The through cutout 48 forms a notch. It extends from a free edge of the sealing edge 28. The sealing edge 28 comprises a main plane 58 crossed by the through cutout 48.

[0068] According to an alternative of the invention, the through-cut comprises an orifice surrounded by the material of the sealing edge.

[0069] The sealing edge 28 is split by the through-cut 48 into a first segment 50 comprising a lateral end 44 and the through-cut 48, and into a second segment 52 (partially shown) extending from the through-cut 48 towards the opposite of the first segment 50. The first segment 50 is shorter than the second segment 52, preferably at least five times shorter.

[0070] A sealing gasket 34 is bonded by an adhesive surface 36 to the sealing edge 28, a first section 40 being glued to the first face 30, a bent section 46 allowing the sealing gasket 34 to be folded around the lateral end 44 and a second section 42 being glued to the second face 32, on either side of the through cutout 48.

[0071] The first segment 50 is surrounded by the seal 34. It is interposed between the first section and the second section. The first segment 50 is glued to the first section 40, to the bent section 46 and to the second section 42. The second segment 52 supports the first section 40 over its entire length and is glued to the second section 42 between the through-cut 48 and a free end 62 of the second section 42.

[0072] The seal 34 is bonded to itself via the through-cut 48. Through said through-cut 48, the first section 40 is bonded to the second section 42, this second section 42 being vertically opposite the first section 40. The seal 34 being folded back on itself at the through-cut 48, the adhesive surface 36 specific to the first section 40 is in contact with the adhesive surface 36 specific to the second section 42 to form a reciprocal bonding interface 54. The adhesive surface is bonded to itself.

[0073] The main wall 26 of the sealing device 16 comprises a holding protrusion 56. Said holding protrusion 56 is situated vertically at a distance from the through-cutout 48, perpendicular to the main plane 58. The holding protrusion 56 projects relative to the main wall 26, parallel to the sealing edge 28. The holding protrusion 56 comprises a holding tab 60, parallel to the sealing edge 28. The holding protrusion 56 is integral with the main wall 26.

[0074] The holding protrusion has a dual purpose. It locks the second section in position once glued, and serves as a support when an operator exerts pressure to glue the sections together.

[0075] The sealing edge 28 comprises a first side 64 joined to the main wall, a second side 66 with a rim 68 opposite the first side 64, the rim 68 extending from the second side 66 towards the opposite of the holding protrusion 56. The rim 68 makes it possible to guide an operator when gluing the sealing gasket 34. Furthermore, it contributes to the long-term maintenance of the sealing gasket once glued.

[0076] The sealing gasket 34, more particularly its first section 40, is glued to the first face 30 of the sealing edge 28 between the first side 64 and the rim 68. The rim 68 guides the installation of the first section 40; it holds it vertically opposite the first face 30.

[0077] The second section 42 is glued thanks to its second face 32, against the first side 64. The second section 42 is placed vertically between the through cutout 48 and the holding protrusion 56. It rests on the holding tab 60. The end free 62 of the second section 42 is placed transversely at a distance from the through cutout 48 and the holding protrusion 56. This makes it possible to extend the second section 42 and to extend its bonded surface.

[0078] [Fig. 3] shows a cross-sectional view of a sealing device 16 for a motor vehicle. The motor vehicle may correspond to that shown in relation to one of Figures 1 to 2.

[0079] The seal 34 has an adhesive surface 36, or first surface, which allows it to be bonded to the sealing edge 28. The seal 34 has an opposite surface 38 to the adhesive surface 36. The opposite surface 38 is generally a second surface. The opposite surface 38 is opposite according to the thickness of the seal 34. The seal 34 has a first section 40 bonded to the first face 30 of the sealing edge 28. Said first section 40 is directly between the windshield and the sealing edge 28; the opposite surface 38 rests against the windshield and the adhesive surface 36 is bonded to the first face 30 of the sealing edge 28.

[0080] The seal 34 also comprises a second section 42 glued to the second face 32 of the sealing edge 28. The seal 34 is folded around the lateral end 44 of the sealing edge 28. The seal 34 surrounds the lateral end 44. The bent section 46 of the seal 34 connects the first section 40 to the second section 42, said bent section 46 surrounding the lateral end 44. The bent section 46 extends the seal transversely. The second section 42 comprises a free end 62, on the side opposite the bent section 46.

[0081] The sealing edge 28 comprises a main elongation 80, defined according to the orientation of the first segment 50 and the second segment 52, in the main plane 58. The main elongation 80 corresponds to the longest dimension of the sealing edge 28. The holding protrusion 56 comprises a first length 70 according to said main elongation 80; the through-cut 48 comprises a second length 72 greater than or equal to the first length 70. Thus, the installation of the second section 42 is easier. In addition, the mass is optimized.

[0082] According to an alternative of the invention, the second length is less than the first length.

[0083] The holding protrusion 56 comprises a first area, the through cutout 48 comprises a second area less than or equal to the first area. This aspect also contributes to facilitating assembly.

[0084] The second section 42 is shorter than the first section 40. The first section 40 covers the entire first face 30. The sealing edge comprises a free segment 82 (partially shown) whose second face 32 is distinct from the second section 42, and whose first face 30 is covered by the first segment 50.

[0085] The seal 34 comprises a foam body, preferably made of cellular foam with semi-closed cells. This type of foam optimizes flexibility and sealing. It has a first maximum thickness 74 but is configured to take on a thickness less than the first thickness 74 if pressure is applied to it. When the pressure ceases, the seal 34 resumes the first maximum thickness 74. This makes it possible to ensure sealing between the sealing edge 28 and the windshield, the seal 34 occupying the space between the two. The first thickness 74 is notably measured against the first face 30.

[0086] In order to ensure optimal bonding of the seal 34 to the sealing edge 28, said seal 34 is folded around the lateral end 44 and bonded to itself at the through-cut 48. The seal 34 comprises a reciprocal bonding interface 54 from the first section 40 to the second section 42 through the through-cut 48. The reciprocal bonding interface 54 is a holding portion, or even a mutual bonding zone. It is in the through-cut 48. The seal 34, more particularly the second section 42 at the reciprocal bonding interface 54, is between the through-cut 48 and the holding protrusion 56.

[0087] The sealing device 16 comprises a spacing 76 between the reciprocal bonding interface 54 and the holding protrusion 56. The spacing 76 can be measured between the holding protrusion 56 and the main plane 58. The first thickness 74 of the sealing gasket 34 is greater than the spacing 76. These values ​​are measured perpendicular to the second face 32.

[0088] The region between the sealing edge 28 and the retaining protrusion 56, transversely on either side of the through-cutout 48, comprises a second thickness 78. The second thickness 78 is also called the air gap. Said second thickness 78 is measured between the retaining protrusion 56 and the second face 32. The second thickness 78 is less than the first thickness 74 and less than the gap 76.

[0089] As a result, the seal 34 is compressed at its second section 42; the holding protrusion 56 pushes the second section 42 vertically into the through-cut 48 to form the reciprocal bonding interface 54. The invention promotes pinching of the seal 34, and improves its long-term holding.

[0090] The second section 42 is glued to the second face 32 of the sealing edge 28 on either side of the through-cut 48. The sealing gasket 34 is compressed according to the second thickness 78, vertically between the first segment 50 of the sealing edge 28 and the holding protrusion 56, respectively between the second segment 52 and the holding protrusion 56. Conversely, the free end 62 of the second section 42 is glued to the second face 32 on the second segment 52, transversely at a distance from the through cutout 48 and the holding protrusion 56. The seal 34 has its first maximum thickness 74, measured at the free end 62. The compression of the seal 34 according to the second thickness 78 on either side of the through cutout 48 allows transverse blocking of the free end 62, and more generally of the seal 34 at the level of said through cutout 48.

[0091] The second section 42 is therefore held via its opposite surface 38 by the holding protrusion 56 and, by taking a thickness equal to the spacing 76, less than the first maximum thickness 74, comes into contact with the first section 40 in the reciprocal bonding interface 54. The first section 40 and the second section 42 are in contact by their respective adhesive surfaces 36. This arrangement makes it possible to ensure effective bonding of the first section 40 and more generally of the sealing joint 34 on the sealing edge 28.

[0092] [Fig. 4] shows a diagram of a method of assembling a sealing device for a motor vehicle. The motor vehicle may correspond to that shown in relation to one of Figures 1 to 3.

[0093] The manufacturing process comprises the steps:

[0094] a) providing 100 a main wall with a sealing edge, for example inclined or projecting relative to the main wall;

[0095] b) placing 102 a sealing gasket against the sealing edge by gluing the adhesive surface against the first face and against the second face, and by placing the second section against the holding protrusion;

[0096] c) support 104 against the first section at the level of the cut-out passing through towards the holding protrusion.

[0097] In step b) positioning 102, the second section of the seal is compressed between the second face and the holding protrusion. In step b) positioning 102, the seal is first placed against the first face, then against the second face. The seal is then arched. The positioning of the second section relative to the holding protrusion is carried out during the sub-step of positioning against the second face.

[0098] According to a preferred embodiment, the main wall is made of a plastic or composite material. The plastic material may comprise a thermoplastic material or a thermosetting material. According to a preferred embodiment, the plastic material is selected from the group comprising polypropylene, polyamide, polyphthalamide, polyetheretherketone, polyphenylene sulfide, polyamide-imide, polyetherimide, polyarylamide, polyepoxide, unsaturated polyester, vinylester or polyester-vinylester resins. For example, the composite material comprises a matrix of a plastic material as described above with a reinforcement. For example, the reinforcement includes glass or carbon fibers.

[0099] The main wall comprises at least 10% by weight of recycled plastic material based on the total weight of the plastic material; preferably from 10 to 80% by weight; more preferably from 20 to 60% by weight or from 30 to 40% by weight. The use of recycled plastic material reduces the ecological footprint of the vehicle.

[0100] The invention comprises the combination of all the embodiments illustrated by all the figures.

[0101] [Fig.3] is an isometric view. It respects a specific scale, real angles and real proportions.

Claims

Claims

1. Sealing device (16) for a motor vehicle (10), the sealing device (16) comprising: a main wall (26) with a sealing edge (28), the sealing edge (28) having a first face (30), a second face (32) opposite the first face (30), a through-cut (48) connecting the first face (30) to the second face (32); a seal (34) with an adhesive surface (36) bonded to the sealing edge (28), a surface opposite (38) to the adhesive surface (36), the seal (34) having a first section (40) bonded to the first face (30), a second section (42) bonded to the second face (32); the first section (40) and the second section (42) being bonded through the through-cut (48);characterized in that at the through cutout (48), the sealing device (16) further comprises a holding protrusion (56) against the opposite surface (38) of the second section (42) so that the second section (42) is held against the first section (40) through the through cutout (48).;

2. Sealing device (16) according to claim 1, characterized in that the sealing gasket (34) comprises a first thickness (74) against the first face (30), a second thickness (78) against the holding protrusion (56), the second thickness (78) being less than the first thickness (74).

3. Sealing device (16) according to one of claims 1 to 2, characterized in that the sealing edge (28) comprises a first side (64) joined to the main wall (26), a second side (66) with a rim (68) opposite the first side (64), the rim (68) extending from the second side (66) towards the opposite of the holding protrusion (56).

4. Sealing device (16) according to one of claims 1 to 3, characterized in that the sealing edge (28) comprises a main plane (58), the holding protrusion (56) being at a distance from the through-cutout (48) perpendicular to the main plane (58); preferably, the sealing edge (28) is inclined relative to the main wall (26).

5. Sealing device (16) according to one of claims 1 to 4, characterized in that the holding protrusion (56) comprises a holding tab (60); preferably, the protrusion of retaining (56) is parallel to the sealing edge (28).

6. Sealing device (16) according to one of claims 1 to 5, characterized in that the sealing edge (28) comprises a main elongation (80); the holding protrusion (56) comprises a first length (70) along the main elongation (80); the through-cut (48) comprises a second length (72) less than or equal to the first length (70).

7. Sealing device (16) according to one of claims 1 to 6, characterized in that the sealing gasket (34) comprises a foam body, preferably semi-closed cellular foam.

8. Sealing device (16) according to one of claims 1 to 7, characterized in that the sealing joint (34) comprises a bent section (46) connecting the first section (40) to the second section (42); the second section (42) comprises a free end (62) at a distance from the through-cut (48) and / or the holding protrusion (56).

9. Motor vehicle (10) comprising a sealing device (16), characterized in that the sealing device (16) is in accordance with one of claims 1 to 8; preferably, the motor vehicle (10) comprises a windshield (18) against the sealing gasket (34); and / or the main wall (26) delimits a conduit of an air treatment system (24).

10. Method for assembling a sealing device (16) for a motor vehicle (10); characterized in that the sealing device (16) is in accordance with one of claims 1 to 8; and in that the method comprises the steps: • a) providing (100) a main wall (26) with a sealing edge (28); • b) placing (102) a sealing gasket (34) against the sealing edge (28) by gluing the adhesive surface (36) against the first face (30) and against the second face (32), and by placing the second section (42) against the holding protrusion (56); • c) pressing (104) against the first section (40) at the through-cut (48) towards the holding protrusion (56); preferably, in step b) installation (102), the second section (42) of the sealing joint (34) is compressed between the second face (32) and the holding protrusion (56). 15

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