Apparatus having walls adapted to cause a gasket to adhere to itself
By setting through holes at the end of the equipment wall, the adhesive gasket can be automatically bonded to the wall, solving the problem of adhesive gasket detachment and improving the bonding strength and sealing effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- PEUGEOT CITROEN AUTOMOBILES SA
- Filing Date
- 2021-12-14
- Publication Date
- 2026-06-23
AI Technical Summary
Adhesive gaskets are prone to detaching from the walls of equipment during transportation or delivery, resulting in wasted installation time and additional costs, and may also be damaged, affecting the sealing function.
A through-hole is provided at the end of the wall of the device, which allows the end portion of the adhesive gasket to automatically bond with the adhesive in the through-hole area, thereby enhancing the bonding strength and resisting tensile stress.
It improves the adhesion strength between the adhesive gasket and the wall, prevents detachment, reduces the time required for manual re-adhesion, avoids damage, and ensures the sealing function.
Smart Images
Figure CN116802083B_ABST
Abstract
Description
Technical Field
[0001] This invention claims priority to French application 2100356, filed on January 14, 2021, the contents of which (text, drawings and claims) are incorporated herein by reference.
[0002] The present invention relates to a device comprising a wall, wherein the wall and an adhesive sealing gasket are integrally bonded together. Background Technology
[0003] In some fields (e.g., optionally motorized vehicles), devices are used that include a wall, which is integrally bonded to an adhesive gasket by bonding. Sometimes, the wall includes at least one first end portion having an inner surface and an outer surface, and the adhesive gasket includes at least one second end portion having a face provided with an adhesive that ensures the face is bonded to the outer and inner surfaces of the first end portion by folding (approximately 180°). This is, for example, in the case of devices constituting an instrument panel for use in a vehicle (where the wall, for example, is part of a defrosting duct). In this example, the wall is integrally formed with the front portion of the instrument panel, which is positioned near the lower part of the vehicle's windshield, while the adhesive gasket is inserted, thereby assisting in the sound insulation (or acoustic sealing) of the passenger compartment. The adhesive gasket is folded over the first end portion of the wall, which thereby assists in the sound insulation at the end of the wall.
[0004] The adhesive sealant is typically bonded to the walls of the device in the factory where it is manufactured. This is especially true when the device is an instrument panel (which is subsequently stored in its manufacturing plant and then transported to the industrial production site of an automaker (where the instrument panel is then stored again and transported to the assembly line for installation in the vehicle being manufactured)).
[0005] Very frequently, sub-parts of the second end portion of the adhesive gasket (which are initially bonded to the inner surface of the first end portion of the wall) completely detach from the inner surface during transport, delivery, or storage. This is because the 180° fold of the second end portion of the adhesive gasket induces tensile stress on the sub-parts of the second end portion (which are initially bonded to the inner surface of the first end portion of the wall), and the adhesive cannot fully compensate for this tensile stress on the inner surface. Whenever this occurs, the technician responsible for installing the equipment (e.g., in a vehicle) is first forced to manually re-bond each detached sub-part of the second end portion of the adhesive gasket to the inner surface of the first end portion of the wall involved, which wastes time and thus introduces additional production costs. It is also possible that the detached sub-parts of the second end portion of the adhesive gasket are damaged or folded due to auto-adhesion on themselves, which prevents the adhesive gasket from ensuring its function and thus requires complete replacement of the adhesive gasket, which is even more time-consuming. Summary of the Invention
[0006] The object of the present invention is therefore particularly to overcome the above-mentioned defects.
[0007] To this end, the present invention provides a device comprising, on one hand, a wall (the wall including at least one first end portion having an inner surface and an outer surface), and on the other hand, an adhesive sealing gasket including at least one second end portion having a surface provided with an adhesive that ensures the surface is bonded to the outer and inner surfaces of the first end portion by folding.
[0008] The device is characterized in that each of the first end portions includes at least one through hole, the at least one through hole allowing partial adhesion of the face of the second end portion to the face itself.
[0009] Due to the "self-adhesion" of the adhesive itself in the region of the through hole, the adhesion strength of the second end portion of the adhesive gasket on the inner and outer surfaces of the first end portion of the wall is significantly locally increased, thereby enabling the adhesion to be durable.
[0010] The device according to the invention may include other features, either individually or in combination, in particular:
[0011] - The wall of the device may include two opposite first end portions, each of the two first end portions having an inner surface and an outer surface, and the adhesive gasket of the device may include two opposite second end portions, each of the two second end portions having a surface provided with an adhesive that ensures that the surface is bonded to the outer and inner surfaces of the first end portions by folding and to the surface itself via the through-hole;
[0012] - The device may constitute a dashboard for mounting on a vehicle;
[0013] - In the last alternative implementation, the device may include a defrosting conduit that includes the wall and is integral with the front of the dashboard, the front being positioned near the lower part of the vehicle's windshield, with the adhesive sealing gasket inserted therein.
[0014] The present invention also provides a vehicle of an optional motor type, the vehicle including equipment of the type described above. Attached Figure Description
[0015] Other features and advantages of the invention will become more apparent from the following detailed description and accompanying drawings, in which:
[0016] - Figure 1 The diagram schematically illustrates a portion of an embodiment of a device according to the invention, which constitutes a vehicle's dashboard, and...
[0017] - Figure 2 A schematic cross-sectional view is shown. Figure 1 The first end portion of the device wall is bonded to the second end portion of the adhesive sealing gasket. Detailed Implementation
[0018] The present invention is particularly intended to provide a device EV comprising a wall PC, the wall being permanently bonded to an adhesive sealing gasket JA by means of adhesion.
[0019] In the following text, by way of non-limiting example, the device EV is considered to be used as part of a motorized vehicle. However, the invention is not limited to this application. In fact, the device EV according to the invention can be a product or instrument that does not necessarily need to be part of an object (in a broad sense), or can be part of any device, system, instrument, vehicle (any type of vehicle), facility (optionally industrial facility), or building.
[0020] Additionally, in the following text, by way of non-limiting example, the device EV is considered to be a dashboard for mounting on a vehicle (here, a motor vehicle). However, the invention is not limited to this type of vehicle device EV. The invention actually relates to any device EV capable of being mounted on a vehicle and comprising at least one wall, said at least one wall being permanently bonded to an adhesive sealant by bonding.
[0021] exist Figure 1 The above schematically illustrates a portion of an embodiment of a device EV (here, dashboard) according to the invention, which is intended to be mounted on a vehicle (here, a motor vehicle).
[0022] like Figure 1 and Figure 2 As shown above, the device EV according to the present invention includes at least one wall PC and an adhesive sealing gasket JA.
[0023] The wall PC includes at least one first end portion PT1 having opposite inner surfaces FI and outer surfaces FE.
[0024] The adhesive seal JA includes at least one second end portion PT2 having a face FJ, the face being provided with an adhesive that ensures the face is bonded to the outer FE and inner FI of the first end portion PT1 by folding (generally 180° here). In other words, each second end portion PT2 of the adhesive seal JA includes a first sub-portion SP1 and a second sub-portion SP2, the first sub-portion being bonded to the outer FE of the first end portion PT1 of the wall PC, and the second sub-portion being bonded to the inner FI of the first end portion PT1.
[0025] In addition, each of the first end portions PT1 includes at least one through hole TT, which allows the surface FJ of the second end portion PT2 to be partially bonded to itself.
[0026] The adhesive thus adheres itself to the region Z of the through-hole TT, which locally and significantly increases the strength of the bond while limiting (or even eliminating) the tensile stress on its second sub-part SP2. In fact, this "self-adhesion" in region Z induces tensile stresses in opposite directions on the first sub-part SP1 and the second sub-part SP2, thereby achieving a near balance to promote adhesion of the remainder of the first sub-part SP1 to the outside FE of the first end portion PT1 and the remainder of the second sub-part SP2 to the inside FI of the first end portion PT1. Therefore, there is no longer a risk of complete detachment of the second sub-part SP2 of each second end portion PT2 of the adhesive gasket JA, which, especially in the case of vehicle equipment (EV), avoids wasting time and thus additional production costs for technicians on the assembly line. Moreover, through self-adhesion on the adhesive gasket itself, there is no longer a risk of damage or folding of the second sub-part SP2 of each second end portion PT2 of the adhesive gasket JA, allowing the adhesive gasket JA to ensure its function.
[0027] Note that, despite Figure 1 and Figure 2 Not shown above, the wall PC may include two opposite first end portions PT1, each having an inner surface FI and an outer surface FE, while the adhesive seal JA may include two opposite second end portions PT2, each having a surface FJ equipped with an adhesive that ensures the surface is bonded to the outer surface FE and inner surface FI of the first end portions PT1 by folding and to the surface itself via a through-hole TT. However, the wall PC of the device EV may include only one first end portion PT1, in which case the adhesive seal JA may only include one second end portion PT2.
[0028] It was also noted that, Figure 1 In the non-limiting example shown above (where the device EV constitutes the dashboard), the wall PC can serve as part of a defrost duct CD, which is integrated with the front PV of the dashboard EV, positioned near the lower part of the vehicle's windshield, with an adhesive sealing gasket JA inserted therein. In this application, the adhesive sealing gasket JA assists in the sound insulation (or acoustic sealing) of the vehicle's passenger compartment, and the durable adhesion of the first sub-parts SP1 and second sub-parts SP2 of the second end portions PT2(one or more) of the adhesive sealing gasket ensures its function at each end of the wall PC.
Claims
1. An apparatus (EV) comprising a wall (PC) and an adhesive sealing gasket (JA), the wall comprising at least one first end portion (PT1) having an inner surface (FI) and an outer surface (FE), the adhesive sealing gasket comprising at least one second end portion (PT2) having a face (FJ) provided with an adhesive, the adhesive ensuring that the face is bonded to the outer surface (FE) and inner surface (FI) of the first end portion (PT1) by folding, characterized in that, The first end portion (PT1) includes at least one through hole (TT) that allows the face (FJ) of the second end portion (PT2) to be partially bonded to itself.
2. The device according to claim 1, characterized in that, The wall (PC) includes two opposite first end portions (PT1), each of which has an inner surface (FI) and an outer surface (FE), and the adhesive sealing gasket (JA) includes two opposite second end portions (PT2), each of which has a face (FJ) provided with an adhesive that ensures that the face is bonded to the outer surface (FE) and the inner surface (FI) of the first end portions (PT1) by folding and to the face itself via the through-hole (TT).
3. The device according to claim 1 or 2, characterized in that, The device constitutes a dashboard, which is used to equip a vehicle.
4. The device according to claim 3, characterized in that, The device includes a defrosting conduit (CD) that includes the wall (PC) and is integral with the front portion (PV) of the dashboard, the front portion being positioned near the lower part of the vehicle's windshield and having the adhesive sealing gasket (JA) inserted therein.
5. A vehicle, characterized in that, The vehicle includes the device (EV) according to any one of the preceding claims.
6. The vehicle according to claim 5, characterized in that, The vehicle in question is motorized.