Motor vehicle with improved waterproofness of interior space
By generating overpressure in the sealing system of a motor vehicle and utilizing the design of the first and second sealing devices, the sealing effect is enhanced, solving the problem of insufficient waterproof performance of motor vehicles when driving through water, and achieving better sealing and water seepage protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- AUDI AG
- Filing Date
- 2025-09-15
- Publication Date
- 2026-05-19
AI Technical Summary
When existing motor vehicles are driven through water, water can easily seep into the interior space, especially in off-road vehicles and urban vehicles, where the waterproof performance is insufficient, affecting vehicle function.
A sealing system is adopted, which enhances the sealing effect by generating overpressure in the pressure chamber and utilizing the design of the first and second sealing devices to prevent water infiltration. The overpressure is controlled by an overpressure valve, and the waterproof performance is improved by combining the waterproof sealing surface.
It effectively prevents water from seeping into the interior space, ensuring the vehicle's sealing and waterproof performance when driving through water, and the water that seeps in is easily drained, reducing wear and increasing the vehicle's wading depth.
Smart Images
Figure CN122058735A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a motor vehicle, the motor vehicle comprising: a vehicle body / body having at least one interior space; at least one adjusting member supported on the vehicle body in an adjustable manner, the adjusting member being capable of reversibly sealing at least one interior space; a sealing system having a first sealing device and a second sealing device defining a pressure chamber in the closed state of the adjusting member; and means for generating overpressure in the pressure chamber in the closed state of the adjusting member, wherein the first sealing device has a first sealing surface on the pressure chamber side and a first contact surface facing the interior space on an opposite side, and the second sealing device has a second contact surface on the pressure chamber side and a waterproof sealing surface on an opposite side. Background Technology
[0002] Motor vehicles, especially off-road vehicles, are designed to navigate through flooded areas or bodies of water. Each vehicle can be labeled with a wading depth that allows it to cross calm water at an appropriate speed without water seeping into the power unit, damaging electronic equipment, or affecting vehicle functionality. For off-road vehicles, the wading depth is greater than that of vehicles designed and optimized for urban traffic. However, even these urban vehicles require good waterproofing to cope with conditions such as heavy rainfall.
[0003] Wading depth relates to the aforementioned characteristics, but even if you are aware of the wading depth while driving through water, water may still seep into the interior space.
[0004] DE 10 2008 028 004 A1 describes an exhaust system for a vehicle door seal, which is used to discharge compressed air trapped in the sealing gap between two seals when the door is closed into the vehicle interior through a seal passage, thereby reducing the force required to close the door.
[0005] KR 19980022871 U discloses a sealing system having a vehicle-side sealing device and a door-side sealing device, which define a pressure chamber when the door is locked. Air can be introduced into the pressure chamber when the door is locked, and the air escapes to the atmosphere when the door is opened.
[0006] A sealing control device is known from KR 20230057859 A, wherein a seal is installed on the outer periphery of a vehicle door or door opening. Air can be injected into or discharged from the seal by a fan. The opening and closing of the door can be monitored by means of sensors, wherein the control unit controls the fan based on the state detected by the sensors. Therefore, when the door is closed, air can be injected into the seal, and when the door is open, air can be discharged from the seal. Summary of the Invention
[0007] The purpose of this invention is to provide a motor vehicle with improved water resistance.
[0008] This objective is achieved by a motor vehicle having the features of claim 1. Advantageous designs with suitable improvements to the invention are described in the dependent claims.
[0009] This can be achieved through the vehicle structure described at the beginning, which features a sealing system design. Overpressure is generated in the pressure chamber by a device that creates overpressure, which acts on the first sealing surface of the first sealing device and presses it firmly against the first contact surface. The overpressure also acts on the second sealing device, but on its second contact surface, thus creating an overpressure valve that limits the overpressure to a predetermined or pre-defined value, preventing critical or even dangerous overpressure. Furthermore, external water pressure through the waterproof sealing surface provides stronger pressure on the second contact surface, thereby improving the sealing effect. The response pressure of the overpressure valve is therefore related to the wading depth with a given hydrostatic pressure and increases in a desired manner with increasing wading depth. Additionally, the hydrostatic pressure on the waterproof sealing surface improves the sealing effect.
[0010] Preferably, the first sealing device is assigned to the adjusting component, and the second sealing device is assigned to the vehicle body below the first sealing device. This ensures that the second sealing device remains in a fixed position within the coordinate system defined by the vehicle and experiences less wear. It also facilitates the drainage of any infiltrated water, as drainage is carried out spatially separately and independently from the first sealing device.
[0011] Furthermore, it has been proven advantageous that the second contact surface of the second sealing device on the pressure chamber side is concave when the regulating component is in the closed state, as this facilitates the function of the overpressure valve and the drainage.
[0012] If the second sealing device is oriented downwards, the flow direction of water or air flowing out of the pressure chamber is also preferably set to a downward direction pointing towards the ground.
[0013] Furthermore, the second sealing device can taper toward its free end, wherein the response characteristics of the overpressure valve are determined by this taper, because the free end is more flexible.
[0014] The device for generating overpressure can be formed by a compressor or a compressed gas cylinder, wherein the compressed gas cylinder preferably contains compressed air, but other gases or gas mixtures may also be present. For example, a nitrogen-oxygen mixture (Nitrox) can be used.
[0015] If the device used to generate overpressure is designed to generate overpressure exceeding the sealing effect of the second sealing device, this will promote the cleaning of the pressure chamber and blow out any infiltrated impurities.
[0016] Preferably, the adjustment component is formed by a door, through which the interior space formed by the passenger compartment can be closed. The adjustment component is usually a pivot component, but it can also be a sliding door, especially in high-end luxury cars.
[0017] This invention is not only applicable and useful for passenger compartments (i.e., specific interior spaces), but can also be used for any externally sealed interior space. The adjustment component can be formed by a luggage compartment cover, through which the interior space formed by the luggage compartment is closed.
[0018] Particularly preferred is the inclusion of a control unit capable of manually or automatically activating the overpressure generation device before or during wading, based on sensor data. This avoids the need for the overpressure generation device to be continuously activated, as wading events are sporadic compared to the total operating time of the vehicle.
[0019] The features and combinations of features mentioned above in the specification, as well as the features and combinations of features mentioned below in the description of the drawings and / or shown separately in the drawings, can be used not only in the combinations given separately, but also in other combinations or individually, without departing from the scope of the invention. Therefore, even if not explicitly shown or explained in the drawings, embodiments derived from and produced by the combinations of features extracted from the illustrated embodiments should be considered as included and disclosed by the invention. Attached Figure Description
[0020] Other advantages, features, and details of the invention will become apparent from the claims, the following description of preferred embodiments, and the accompanying drawings. The drawings show:
[0021] Figure 1 The diagram shows a motor vehicle driving through water.
[0022] Figure 2 A schematic diagram is shown for applying pressure to the sealing system, and
[0023] Figure 3 The sealing system and Figure 2 The corresponding diagram illustrates the use of pressure drainage.
[0024] List of reference numerals in the attached diagram:
[0025] 1 Motor vehicles
[0026] 2. Vehicle body
[0027] 3. Interior Space
[0028] 4 Adjustment components
[0029] 5. Sealing System
[0030] 6 First sealing device
[0031] 7 Second sealing device
[0032] 8 pressure chambers
[0033] 9. Devices for generating overvoltage
[0034] 10 First sealing surface
[0035] 11 First backing
[0036] 12 Second backing
[0037] 13 Waterproof sealing surface
[0038] 14 car doors
[0039] 15 Liquid Level Detailed Implementation
[0040] exist Figure 1 The image schematically shows a motor vehicle 1 driving through water and being washed up to a height not exceeding the wading depth. It can be seen that, despite this, the lower edge of the door is still submerged in water, especially when the vehicle 1 is tilted to the side relative to its direction of travel due to the ground conditions.
[0041] To prevent or reduce water infiltration, a sealing system 5 is provided in the motor vehicle 1, which includes: a vehicle body 2 with at least one interior space 3; and at least one adjusting member 4 adjustablely supported on the vehicle body 2, through which at least one interior space 3 can be reversibly closed. The sealing system 5 includes a first sealing device 6 and a second sealing device 7, which define a pressure chamber 8 when the adjusting member is closed. Furthermore, a device 9 is provided for generating overpressure in the pressure chamber 8 when the adjusting member 4 is closed.
[0042] The first sealing device 6 has a first sealing surface 10 on the pressure chamber side and a first contact surface 11 facing the internal space 3 on the opposite side. The second sealing device 7 has a second contact surface 12 on the pressure chamber side and a waterproof sealing surface 13 on the opposite side. Figure 2 ).
[0043] In the event of overpressure in pressure chamber 8, the sealing effect of the first sealing device 6 is enhanced by the first sealing surface 10, while the sealing effect of the second sealing device 7 is improved by the hydrostatic pressure present when crossing the water body due to the waterproof sealing surface 13, making it difficult for water to seep into pressure chamber 8. Furthermore, due to the configuration of the second sealing device 7, any water that seeps in can flow out again after leaving the water body or be actively discharged by the device 9 used to generate overpressure. Figure 3 ).
[0044] Figure 2 and Figure 3 As shown, a first sealing device 6 is assigned to an adjusting member 4, and a second sealing device 7 is assigned to the vehicle body 2 below the first sealing device 6, wherein the second contact surface 12 on the pressure chamber side of the second sealing device 7 is concavely curved in the closed state of the adjusting member 4.
[0045] The second sealing device 7 is oriented downwards and tapers toward its free end.
[0046] The device 9 for generating overpressure can be formed from a compressor, such as in... Figure 2 As shown in the diagram. Alternatively, compressed gas cylinders may be used.
[0047] Here, the device 9 for generating overpressure is designed to generate overpressure exceeding the sealing effect of the second sealing device 7. It can provide a first operating pressure that does not exceed the sealing effect and is used to improve the sealing effect, and a second operating pressure that exceeds the sealing effect and is used to drain water that has seeped into the pressure chamber 8 or remove contaminants.
[0048] Adjustment component 4 is formed by a door, which can close the interior space 3 formed by the passenger compartment. Adjustment component 4 can also be formed by a luggage compartment cover, which can close the interior space 3 formed by the luggage compartment.
[0049] There is a control unit that can manually or automatically activate the device 9 for generating overpressure before or during wading, based on sensor data.
Claims
1. A motor vehicle (1), the motor vehicle comprising: A vehicle body (2) having at least one interior space (3); at least one adjusting member (4) supported on the vehicle body (2) in an adjustable manner, by means of which the at least one interior space (3) can be reversibly closed; a sealing system (5) having a first sealing device (6) and a second sealing device (7), the first sealing device and the second sealing device defining a pressure chamber (8) in the closed state of the adjusting member (4); a device (9) for generating overpressure in the pressure chamber (8) in the closed state of the adjusting member (4), characterized in that the first sealing device (6) has a first sealing surface (10) on the pressure chamber side and a first contact surface (11) facing the interior space (3) on the opposite side, and the second sealing device (7) has a second contact surface (12) on the pressure chamber side and a waterproof sealing surface (13) on the opposite side.
2. The motor vehicle (1) according to claim 1, characterized in that, The first sealing device (6) is assigned to the adjusting component (4), while the second sealing device (7) is assigned to the vehicle body (2) below the first sealing device (6).
3. The motor vehicle (1) according to claim 2, characterized in that, The second contact surface (12) on the pressure chamber side of the second sealing device (7) is concavely bent when the adjusting component (4) is in a closed state.
4. The motor vehicle (1) according to claim 2 or 3, characterized in that, The second sealing device (7) is oriented downwards.
5. The motor vehicle (1) according to claim 4, characterized in that, The second sealing device (7) tapers toward its free end.
6. The motor vehicle (1) according to any one of claims 1 to 5, characterized in that, The device (9) used to generate overpressure is formed by a compressor or a compressed gas cylinder.
7. The motor vehicle (1) according to any one of claims 1 to 6, characterized in that, The device (9) for generating overpressure is designed to generate overpressure exceeding the sealing effect of the second sealing device (7).
8. The motor vehicle (1) according to any one of claims 1 to 7, characterized in that, The adjustment component (4) is formed by the door (14), through which the interior space (3) formed by the passenger compartment can be closed.
9. The motor vehicle (1) according to any one of claims 1 to 8, characterized in that, The adjustment component (4) is formed by the luggage compartment cover, which can close the internal space (3) formed by the luggage compartment.
10. The motor vehicle (1) according to any one of claims 1 to 9, characterized in that, There is a control unit that can manually or automatically activate the device for generating overpressure (9) before or during wading, based on sensor data.