Sealing system inserted between a heating, ventilation and / or air-conditioning installation and a wall of a vehicle

Abstract

The invention relates to a sealing system (2) which is intended to be inserted between a heating, ventilation and / or air-conditioning installation of a vehicle and a wall of the vehicle, the sealing system (2) comprising a first part (4) and a second part (6), the second part (6) comprising at least one opening (28) which is configured to allow at least one component of the heating, ventilation and / or air-conditioning installation to pass, the first part (4) comprising at least one sealing edge (8) and a central portion (10) which is surrounded by the sealing edge (8), the sealing edge (8) and the central portion (10) being integral, the second part (6) being rigidly connected to the central portion (10), the central portion (10) delimiting a passage (12) which is configured to border at least one air inlet of the heating, ventilation and / or air-conditioning installation.

Description

DESCRIPTION TITLE OF THE INVENTION: SEALING SYSTEM INTERPOSED BETWEEN A VENTILATION, HEATING AND / OR AIR CONDITIONING INSTALLATION AND A WALL OF A VEHICLE. jjoooi] The present invention relates to the field of ventilation, heating and / or air conditioning installations, and it relates more particularly to a sealing system for such an installation making it possible to ensure a sealed connection between a vehicle and said ventilation, heating and / or air conditioning installation. ^0002] Ventilation, heating and / or air conditioning installations are commonly fitted to vehicles, particularly motor vehicles. Within these ventilation, heating and / or air conditioning installations, components make it possible to fluidically connect said installation to the interior of the vehicle and to the engine compartment.These components may take the form of circulation conduits allowing a fluid to circulate or the form of processing equipment playing a role on a fluid such as a pressure change mechanism.

[0003] These components, and in particular the circulation ducts, pass through a wall of the vehicle to allow the distribution of the various fluids within the vehicle. To this end, the sealing of said wall must be ensured to reduce engine noise perceived in the passenger compartment of the vehicle and to prevent the penetration of fluids of all kinds such as gases and liquids.

[0004] It is known to ensure the seal between said wall of the vehicle and the ventilation, heating and / or air conditioning installation by means of a plate5 grouping the different components passing through the wall of the vehicle and a seal surrounding said plate. However, such a system for ensuring the seal between the ventilation, heating and / or air conditioning installation has very bulky dimensions increasing the distance between the ventilation, heating and / or air conditioning installation and said wall of the vehicle. In addition, such a system has the disadvantage of increasing the complexity of the assembly of the ventilation installation, heating and / or air conditioning as well as the cost of manufacturing such ventilation, heating and / or air conditioning installation.

[0005] The present invention falls within this context and aims to overcome at least some of the drawbacks of the prior art, and in particular to reduce 5 the size of a sealing system capable of ensuring sealing between a ventilation, heating and / or air conditioning installation and a wall of a vehicle.

[0006] The invention thus relates to a sealing system intended to be interposed between a ventilation, heating, and / or air conditioning installation of a vehicle and a wall of said vehicle, the sealing system comprising a first part and a second part, the second part comprising at least one opening configured to allow at least one component of the ventilation, heating and / or air conditioning installation to pass through, the first part comprising at least one sealing edge and a central portion of which at least one part is flexible, the central portion being surrounded by said sealing edge, the sealing edge and the central portion being in one piece, the second part being integral with the central portion, the central portion delimiting a passage configured to border at least one air inlet of the ventilation, heating and / or air conditioning installation.^0007] The sealing system is arranged between the ventilation, heating and / or air conditioning system and a wall of the vehicle in such a way that the peripheral edge is in contact on the one hand with the wall of the vehicle and on the other hand with the ventilation, heating and / or air conditioning system. This wall of the vehicle forms an element of the vehicle frame, i.e. a structural element5 of the vehicle.

[0008] The first part is formed of the sealing edge and the central portion. The sealing edge is entirely formed of a flexible material, i.e. capable of deforming to fit the shape of an element coming into contact with the sealing edge. The central portion is formed of a flexible material or formed of a flexible material and a rigid material. It is understood that a part of the central portion can be rigid provided that this part does not require deformation to fit a wall or a conduit so as to ensure a seal.

[0009] The first part differs from the second part, particularly with regard to the hardness coefficient. In fact, the first part has a flexibility allowing it to ensure, in particular, the seal between the ventilation, heating and / or air conditioning system and the wall of the vehicle by coming to 5 deform so that the peripheral edge fits the wall of the vehicle and a wall of the ventilation, heating and / or air conditioning system.

[0010] The first part forms a single unit, that is to say that the peripheral edge and the central portion have a continuity of material. It is understood that the peripheral edge ensuring the seal between the ventilation, heating and / or air conditioning installation and the wall of the vehicle and the central portion delimiting the passage are formed from a single piece.

[0011] According to a characteristic of the invention, the first part is flexible and the second part is rigid.

[0012] According to a characteristic of the invention, the second part delimits a cavity5 configured to accommodate said component of the ventilation, heating and / or air conditioning installation. This cavity delimits at least in part an internal volume in which the component of the ventilation, heating and / or air conditioning installation is housed when the sealing system is assembled to said ventilation, heating and / or air conditioning installation. $oo 13] According to a characteristic of the invention, the second part comprises a bottom wall through which said opening is formed, the bottom wall being intended to come into contact with the ventilation, heating and / or air conditioning installation. It is understood that the bottom wall participates in delimiting the cavity of the second part.In addition, the opening made in the back wall allows the component of the ventilation, heating and / or air conditioning installation to be housed by passing it through the back wall.

[0014] According to a characteristic of the invention, the central portion extends in a first plane of elongation and the bottom wall extends in a second plane of elongation, the first plane of elongation being distinct from the second plane of elongation, the cavity of the second part extending between the first plane of elongation and the second plane of elongation. The cavity extends from the first plane of elongation in the direction of the ventilation, heating and / or air conditioning installation when the sealing system is assembled. with the ventilation, heating and / or air conditioning installation. Such a feature allows the cavity not to prevent the peripheral edge of the sealing system from coming into contact with said wall of the vehicle.

[0015] According to a characteristic of the invention, the central portion comprises a 5 sealing lip delimiting at least in part the passage, the sealing lip being configured to come into contact with a wall of the heating, ventilation and / or air conditioning installation which surrounds the air inlet. It is understood that the sealing lip is integral with the peripheral edge while being separated from it by a part of the central portion 10 distinct from the sealing lip. This sealing lip is intended to fit against said wall of the ventilation, heating and / or air conditioning installation so as to ensure sealing between said wall of the ventilation, heating and / or air conditioning installation and the space of the sealing system delimited by the peripheral edge. ijooiô] According to a characteristic of the invention, the sealing lip is distinct from the sealing edge.

[0017] According to a characteristic of the invention, the first part is overmolded around the second part. This overmolding of the first part around the second part makes it possible to improve the compactness of the sealing system. (|OOI8] According to a characteristic of the invention, the second part comprises at least one tab configured to secure the sealing system to a housing of the ventilation, heating and / or air conditioning installation.

[0019] According to a characteristic of the invention, at least the first part is formed from ethylene-propylene-diene monomer. ^0020] The present invention also relates to a ventilation, heating and / or air conditioning installation comprising a sealing system in accordance with any one of the aforementioned characteristics, the ventilation, heating and / or air conditioning installation comprising a housing delimiting a recess in which at least a part of the second part 0 of the sealing system is housed, the ventilation, heating and / or air conditioning installation comprising a compression wall and an element thermally and / or acoustically insulating constrained between the housing and the compression wall.

[0021] According to a characteristic of the invention, a first face of the compression wall is in contact with the thermally and / or acoustically insulated element 5 insulating and a second face of the compression wall opposite the first face is in contact with the second part of the sealing system.

[0022] According to a characteristic of the invention, this ventilation, heating and / or air conditioning installation comprises at least one evaporator and an expansion valve associated with said evaporator. Said expansion valve forms the component of the ventilation, heating and / or air conditioning installation. The expansion valve is intended to be housed in the second part of the sealing system, in particular by passing through the opening of the second part.

[0023] According to a characteristic of the invention, the compression wall is movable between a first position in which the thermally and / or acoustically insulating element is in a relaxed state and a second position in which the thermally and / or acoustically insulating element is in a compressed state, the compression wall being in its second position when the sealing system is secured to the housing of the ventilation, heating and / or air conditioning installation. ^0024] Other characteristics, details and advantages of the invention will emerge more clearly from reading the description which follows on the one hand, and from several exemplary embodiments given for informational and non-limiting purposes with reference to the appended schematic drawings on the other hand, in which:

[0025] [Fig.i] represents a general view of a sealing system according to the present invention;

[0026] [Fig.2] represents an exploded view of a face of the sealing system opposite the face of said sealing system represented by figure 1;

[0027] [Fig.3] represents a general view of the sealing system represented by figures 1 and 2, this sealing system bordering an air inlet of a ventilation, heating and / or air conditioning installation;

[0028] [Fig.4] represents a sectional view of a ventilation, heating and / or air conditioning installation comprising the sealing system visible in figures i to 3-

[0029] It should first be noted that if the figures show the invention in a 5 detailed for its implementation, these figures can of course be used to better define the invention, if necessary. It should also be noted that these figures only show examples of embodiments of the invention.

[0030] The features, variants and different embodiments of the invention may be combined with each other in various combinations, provided that they are not incompatible or mutually exclusive. In particular, variants of the invention may be conceived comprising only a selection of features described below in isolation from the other features described, if this selection of features is sufficient to confer a technical advantage or to differentiate the invention from the state of the art.

[0031] In the figures, elements common to several figures retain the same reference.

[0032] In the following description, we will refer to an orientation depending on the Longitudinal, Vertical and Transverse axes as they are arbitrarily defined by the trihedron L, V, T represented in figures 1 to 4.

[0033] Figure 1 represents a sealing system 2 intended to be interposed between a ventilation, heating and / or air conditioning installation 3, visible in Figure 4, and a wall of a motor vehicle. The sealing system 2 extends along a longitudinal main elongation direction,5 parallel to the axis L.

[0034] This sealing system 2 comprises a first part 4 and a second part 6, the first part 4 having a lower hardness coefficient than the second part 6. It is understood that the first part 4 is more flexible than the second part 6. In addition, the first part 4 has a low thickness allowing it to limit the size of the sealing system 2 when the latter is assembled with the ventilation, heating and / or ventilation installation. air conditioning 3. This low thickness of the first part 4 is made possible in particular by means of the flexibility of said first part 4.

[0035] To obtain sufficient flexibility of the first part 4, the latter is formed in the embodiment shown, from ethylene-propylene-diene 5 monomer also known by the acronym EPDM.

[0036] The first part 4 comprises a sealing edge 8 and a central portion 10. The sealing edge 8 forms the perimeter of the sealing system 2. In addition, the sealing edge 8 delimits the central portion 10 of the sealing system 2. It is understood that the central portion 10 is surrounded by the 10 sealing edge 8. This sealing edge 8 is intended to come into contact, for example, with a wall of the ventilation, heating and / or air conditioning installation 3 on one side and a wall of the vehicle on the other. Thus, the sealing system is capable of ensuring a seal between the ventilation, heating and / or air conditioning installation 3 and said wall of the vehicle. if 0037] It should be noted that the first part 4 forms a single monobloc assembly, that is to say that the sealing edge 8 and the central portion 10 are integral with each other. In other words, there is a continuity of material between the peripheral edge 8 and the central portion 10. Such an assembly makes it possible in particular to improve the compactness of the sealing system 2.^0038] As seen in Figures 1 and 2, the central portion 10 comprises a passage 12 configured to border at least one air inlet 14, seen in Figures 3 and 4, of the ventilation, heating and / or air conditioning installation 3.

[0039] This characteristic of the sealing system 2 is particularly visible in Figure 3. The ventilation, heating and / or air conditioning installation 3 5 comprises a duct 16 obstructed by a grid 18. The central portion 10 comprises a sealing lip 20 delimiting the passage 12. This sealing lip 20 fits the duct 16 in such a way that the first part 4 sealably surrounds the duct 16 of the ventilation, heating and / or air conditioning installation 3. I30040] It should be noted that the sealing lip 20 is distinct from the sealing edge 8. In addition, the sealing lip 20 is separated from the sealing edge 8 by at least a part of the central portion 10. It is understood that the sealing edge 8 and the sealing lip 20 provide two separate sealing functions. The sealing edge 8 ensures sealing between the wall of the vehicle and the ventilation, heating and / or air conditioning installation 3 while the sealing lip 20 ensures 5 the sealing between the duct 16 of the ventilation, heating and / or air conditioning installation 3 and the second part 6 of the sealing system 2.

[0041] The second part 6 forms the element of the sealing system 2 intended to receive at least one component of the ventilation, heating and / or air conditioning installation 3. More specifically, the second part 6 forms an element in which a component 24, visible in FIG. 4, of the ventilation, heating and / or air conditioning installation 3 will be housed.

[0042] For this purpose, the second part 6 comprises a cavity 22 configured to accommodate the component 24 of the ventilation, heating and / or air conditioning installation 3. 160043] As can be seen in particular in FIG. 1, the second part 6 comprises a bottom wall 26 comprising an opening 28 configured to allow said component 24 of the ventilation, heating and / or air conditioning installation 3 to pass through. The bottom wall 26 of the second part 6 is intended to come into contact with the ventilation, heating and / or air conditioning installation 0 3.

[0044] More specifically, the cavity 22 is defined between a first plane of elongation of the central portion 10 and a second plane of elongation of the bottom wall 26. It is understood that the cavity 22 extends from the plane of elongation of the central portion 10 of the sealing system 2 to the 5 plane of elongation of the bottom wall 26 of the second part 6 of the sealing system 2.

[0045] In the embodiment shown, the cavity 22 has dimensions allowing the component 24 of the ventilation, heating and / or air conditioning installation 3 to be housed without the latter protruding from the peripheral edge 80 in a direction parallel to the axis V. In other words, at least the part of the component 24 configured to be housed in the cavity 22 has a dimension measured parallel to the shortest segment joining the first plane of elongation of the central portion 10 to the second plane of elongation. of the bottom wall 26 less than the dimension of this same segment joining the peripheral edge 8 to the bottom wall 26.

[0046] Furthermore, the second part 6 is integral with the central portion 10 of the first part 4. To achieve this, this connection between the second part 6 5 and the central portion 10, the central portion 10, and more broadly the first part 4 of the sealing system 2, is overmolded around the second part 6.

[0047] Figure 2 shows an exploded view of the sealing system 2. In addition, this figure 2 shows a face of the sealing system 2 opposite the face visible in figure 1.

[0048] It should be noted that in this figure 2 the displacement of the second part 6 relative to the first part 4 is represented by dotted lines 29. This displacement of the second part 6 relative to the first part 4 makes it possible to highlight the overmolding of the first part 4 around the 15 second part 6.

[0049] In addition, the second part 6 comprises at least one tab 30 configured to secure the sealing system to a housing 32, visible in FIG. 4, of the ventilation, heating and / or air conditioning installation 3. This tab 30 is arranged on the periphery of the cavity 22 and is oriented in 20 direction of the ventilation, heating and / or air conditioning installation 3 when the sealing system 2 is assembled to the ventilation, heating and / or air conditioning installation 3.

[0050] Figure 4 represents the ventilation, heating and / or air conditioning installation 3 to which the sealing system 2 is attached. As a reminder, 25 this securing of the sealing system 2 to the ventilation, heating and / or air conditioning installation 3 is carried out in particular by means of the tongue 30 and the sealing lip 20 which fit a wall of the ventilation, heating and / or air conditioning installation delimiting the conduit 16. 310051] As can be seen in this figure 4, the ventilation, heating and / or air conditioning installation 3 comprises the housing 32 delimiting a recess 34 in which at least part of the second part 6, and more specifically at least part of the cavity 22 of the second part 6.

[0052] The cavity 22 of the second part 6 is housed in the recess 34 of the housing 32 in such a way that the bottom wall 26 of the second part 6 comes 5 in contact with a compression wall 36 of the ventilation, heating and / or air conditioning installation 3.

[0053] This compression wall 36 makes it possible to define a housing 38 delimited within the recess 34 between the housing 32 on the one hand and the compression wall 36 on the other hand. This housing 38 comprises a thermally and / or acoustically insulating element, not shown here, constrained between the housing 32 and the compression wall 36.

[0054] The thermally and / or acoustically insulating element has dimensions such that the entire housing 38 is filled by the thermally and / or acoustically insulating element. ^0055] Furthermore, the compression wall 36 comprises a first face 40 coming into contact with the thermally and / or acoustically insulating element and a second face 42 coming into contact with the bottom wall 26 of the second part 6 of the sealing system 2, the first face 40 being opposite the second face 42. 1^0056] More specifically, this compression wall 36 is movable in translation between a first position in which the thermally and / or acoustically insulating element is in a relaxed state and a second position in which the thermally and / or acoustically insulating element is in a compressed state.This change in position of the compression wall 36 is modulated by the attachment of the sealing system 2 to the ventilation, heating and / or air conditioning installation 3.

[0057] More specifically, when the sealing system 2 is not secured to the ventilation, heating and / or air conditioning installation 3, the compression wall 36 is in its first position. When the sealing system 2 is secured to the ventilation, heating and / or air conditioning installation 3, the cavity 22 gradually becomes housed in the recess 34. In doing so, the bottom wall 26 of the second part 6 comes into contact with the compression wall 36 and bears against the latter, gradually pulling it from its first position to its second position.

[0058] Once the sealing system 2 is secured to the ventilation installation, 5 heating and / or air conditioning 3, that is to say when the tab 30 is housed in a complementary element of the housing 32 and the sealing lip 20 fits the wall of the conduit 16, the thermally and / or acoustically insulating element is compressed and makes it possible to ensure thermal and / or acoustic sealing between the passenger compartment of the vehicle and the ventilation, heating and / or air conditioning installation 3.

[0059] It follows from the preceding description that the present invention indeed achieves the aim it set for itself by proposing a sealing system whose size is reduced by a combination of a first part and a second part making it possible to group together all of the fluid connection elements of a ventilation, heating and / or air conditioning installation and to ensure sealing between the ventilation, heating and / or air conditioning installation and a wall of a vehicle.

Claims

CLAIMS 1. Sealing system (2) intended to be interposed between a ventilation, heating, and / or air conditioning installation (3) of a vehicle and a wall of said vehicle, the sealing system (2) comprising a first part (4) and a second part (6), the second part (6) comprising at least one opening (28) configured to allow at least one component (24) of the ventilation, heating and / or air conditioning installation (3) to pass through, the first part (4) comprising at least one sealing edge (8) and a central portion (10) surrounded by said sealing edge (8), the sealing edge (8) and the central portion (10) being in one piece, the second part (6) being integral with the central portion (10), the central portion (10) delimiting a passage (12) configured to border at least one air inlet (14) of the ventilation, heating and / or air conditioning installation (3).

2. Sealing system (2) according to the preceding claim, in which the first part (4) forms a flexible part and the second part (6) forms a rigid part.

3. Sealing system (2) according to any one of the preceding claims, in which the second part (6) delimits a cavity (22) configured to accommodate said component (24) of the ventilation, heating and / or air conditioning installation (3).

4. Sealing system (2) according to any one of the preceding claims, in which the second part (6) comprises a bottom wall (26) through which said opening (28) is formed, the bottom wall (26) being intended to come into contact with the ventilation, heating and / or air conditioning installation (3).

5. Sealing system (2) according to claims 3 and 4, in which the central portion (10) extends in a first plane of elongation and the bottom wall (26) extends in a second plane of elongation, the first plane of elongation being distinct from the second plane of elongation, the cavity (22) of the second part (6) extending between the first plane of elongation and the second plane of elongation.

6. Sealing system (2) according to any one of the preceding claims, in which the central portion (10) comprises a sealing lip (20) at least partially delimiting the passage (12), the sealing lip (20) being configured to come into contact with a wall of the heating, ventilation and / or air conditioning installation (3) which surrounds the air inlet (14).

7. Sealing system (2) according to the preceding claim, in which the sealing lip (20) is distinct from the sealing edge (8).

8. Sealing system (2) according to any one of the preceding claims, in which the first part (4) is overmolded around the second part (6).

9. Sealing system (2) according to any one of the preceding claims, in which the second part (6) comprises at least one tab (30) configured to secure the sealing system (2) to a housing (32) of the ventilation, heating and / or air conditioning installation (3).

10. Ventilation, heating and / or air conditioning installation (3) comprising a sealing system (2) according to any one of the preceding claims, the ventilation, heating and / or air conditioning installation (3) comprising a housing (32) delimiting a recess (34) in which at least a part of the second part (6) of the sealing system (2) is housed, the ventilation, heating and / or air conditioning installation (3) comprising a compression wall (36) and a thermally and / or acoustically insulating element constrained between the housing (32) and the compression wall (36), a first face (40) of the compression wall (36) being in contact with the thermally and / or acoustically insulating element and a second face (42) of the compression wall (36) opposite the first face (40) being in contact with the second part (6) of the sealing system (2).

11. Ventilation, heating and / or air conditioning installation (3) according to the preceding claim, in which the compression wall (36) is movable between a first position in which the thermally and / or acoustically insulating element is in a relaxed state and a second position in which the thermally and / or acoustically insulating element is in a compressed state, the compression wall (36) being in its second position when the sealing system (2) is secured to the housing (32) of the ventilation, heating and / or air conditioning installation (3).

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