Skylight drainage systems, drainage devices and vehicles

Abstract

This invention discloses a sunroof drainage system, drainage device, and vehicle. The sunroof drainage system includes a sunroof drainage pipe, a drainage channel, and a main drainage pipe. The upper end of the sunroof drainage pipe is adapted to be located at the sunroof. The drainage channel is formed in the front bulkhead and located at the junction of the windshield and the hood. The main drainage pipe is located below the drainage channel and communicates with it. The lower end of the sunroof drainage pipe is connected to and communicates with the main drainage pipe. According to the sunroof drainage system of this invention, water flowing through the sunroof drainage pipe can be discharged through the main drainage pipe while avoiding the end of the sunroof drainage pipe being in a high-pressure environment. This prevents external noise from entering the vehicle through the sunroof drainage pipe, improving the overall NVH performance. Furthermore, it also prevents foreign objects from being sucked into the sunroof drainage pipe through its end, thus preventing blockage and improving sunroof drainage performance.

Description

Technical Field

[0001] This invention relates to the field of vehicles, and more particularly to a sunroof drainage system, drainage device, and vehicle. Background Technology

[0002] In related technologies, vehicles with sunroofs utilize a sunroof drain pipe to direct water from the sunroof to a drainage channel at the junction of the windshield and the hood. The end of the sunroof drain pipe forms a drain outlet, through which water from the sunroof drains into the drainage channel.

[0003] However, during vehicle operation, the airflow at the windshield swirls at the drain channel, resulting in higher air pressure there. Since the end of the sunroof drain pipe opens towards the drain channel, forming a drain outlet, the air pressure inside the drain pipe is lower than at the drain channel. This pressure difference causes external noise to enter the vehicle through the drain outlet and into the sunroof drain pipe, affecting the overall NVH performance. Furthermore, external debris such as sand and leaves may be drawn into the sunroof drain pipe due to the pressure difference, causing blockages and affecting drainage performance. Therefore, improvements are needed. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a sunroof drainage system that connects and communicates with the main drainage pipe at its lower end. This allows water flowing through the sunroof drainage pipe to be discharged through the main drainage pipe while preventing the end of the sunroof drainage pipe from being in a high-pressure environment. Instead, it creates a low-pressure area at the end of the sunroof drainage pipe, thus preventing external noise from entering the vehicle through the sunroof drainage pipe and improving the overall NVH performance. Furthermore, it also prevents foreign objects from being sucked into the sunroof drainage pipe, thus avoiding blockage and improving sunroof drainage performance.

[0005] The present invention also proposes a drainage device.

[0006] The present invention also proposes a vehicle including the above-mentioned sunroof drainage system or drainage device.

[0007] According to a first aspect of the present invention, a sunroof drainage system includes: a sunroof drain pipe, the upper end of which is adapted to be located at the sunroof; a drainage channel formed on the front bulkhead and located at the junction of the windshield and the hood; and a drainage main pipe located below and communicating with the drainage channel, the lower end of which is connected to and communicates with the drainage main pipe.

[0008] According to the sunroof drainage system of the present invention, by connecting and communicating the lower end of the sunroof drainage pipe with the main drainage pipe, water flowing through the sunroof drainage pipe can be discharged through the main drainage pipe, while avoiding the end of the sunroof drainage pipe being in a high-pressure environment. This makes the environment at the end of the sunroof drainage pipe a low-pressure area, thereby preventing external noise from entering the vehicle through the end of the sunroof drainage pipe and improving the overall NVH performance of the vehicle. Furthermore, it also prevents foreign objects from being sucked into the sunroof drainage pipe through the end, thus preventing blockage and improving the sunroof drainage performance.

[0009] According to some embodiments of the present invention, a first drainage connection hole and a second drainage connection hole are formed on the bottom wall of the drainage channel, a first drainage hole is formed at the upper end of the main drainage pipe and the upper end of the main drainage pipe is inserted into the first drainage connection hole, a second drainage hole is formed on the side wall of the main drainage pipe, the lower end of the skylight drainage pipe is inserted into the second drainage connection hole, and a drainage connection pipe is connected between the second drainage connection hole and the second drainage hole.

[0010] According to some embodiments of the present invention, a first sealing element is provided between the lower end of the skylight drain pipe and the inner peripheral wall of the second drain connection hole.

[0011] According to some embodiments of the present invention, the first sealing member is sleeved on the lower end of the sunroof drain pipe, and an adhesive layer is provided between the outer peripheral wall of the first sealing member and the inner peripheral wall of the second drain connection hole.

[0012] According to some embodiments of the present invention, the front panel includes a first panel located above and behind the drainage channel, the first panel having a first through hole through which the skylight drainage pipe passes.

[0013] According to some embodiments of the present invention, a second sealing element is fitted onto the skylight drain pipe, the second sealing element being used to seal the first through hole.

[0014] According to some embodiments of the present invention, the skylight drain pipe includes a main pipe section and an extension pipe section. The upper end of the main pipe section is adapted to be located at the skylight, the lower end of the main pipe section passes through the first through hole, the upper end of the extension pipe section is connected to the lower end of the main pipe section, and the lower end of the extension pipe section is inserted into the second drain connection hole. The main pipe section and the extension pipe section are formed independently.

[0015] According to some embodiments of the present invention, the main drain pipe includes a drain cap and a drain pipe, the drain pipe and the drain cap being formed independently, the drain cap being connected to the upper end of the drain pipe, the upper end of the drain cap having a first drain hole and a flange, the flange surrounding the outer periphery of the first drain hole, the sidewall of the drain cap having a second drain hole, the front panel including a second panel located on the bottom surface of the drain channel, the second panel having a first drain connection hole, the flange being connected to the second panel, the flange and the second panel together forming the bottom wall of the drain channel.

[0016] According to some embodiments of the present invention, the flange is snapped and fixed to the second enclosure.

[0017] According to some embodiments of the present invention, the second drainage connection hole is formed on the flange.

[0018] According to some embodiments of the present invention, the drainage connecting pipe and the drainage cap are integrally formed.

[0019] According to some embodiments of the present invention, the lower end of the drain cap is engaged with the upper end of the drain pipe.

[0020] According to some embodiments of the present invention, the front panel includes a third panel located below the drainage channel, and the drainage pipe passes through the third panel and is fixed relative to the third panel.

[0021] According to some embodiments of the present invention, a drain outlet is formed at the end of the main drain pipe for discharging water outside the vehicle, and a valve is provided at the end of the main drain pipe for opening and closing the drain outlet.

[0022] According to some embodiments of the present invention, a return spring is connected between the valve and the drain manifold, and the return spring is used to drive the valve to close the drain outlet.

[0023] According to a second aspect of the present invention, a drainage device includes: a main drainage pipe having a first drainage hole and a second drainage hole formed thereon, the first drainage hole being for communicating with a drainage channel, the drainage channel being formed on the front bulkhead and located at the junction of the front windshield and the front hood, and the second drainage hole being for communicating with a sunroof drainage pipe.

[0024] According to an embodiment of the present invention, the drainage device includes a first drainage hole for communicating with a drainage channel and a second drainage hole for communicating with a sunroof drainage pipe. This ensures that the environment connected to the end of the sunroof drainage pipe is not a low-pressure area, preventing external noise from entering the vehicle through the sunroof drainage pipe and improving the overall NVH performance of the vehicle. Furthermore, it also prevents foreign objects from being sucked into the sunroof drainage pipe through the end, thus preventing blockage and improving the sunroof drainage performance.

[0025] According to some embodiments of the present invention, the main drain pipe includes a drain cap, a drain pipe, and a drain connecting pipe. The drain pipe and the drain cap are formed independently. The drain cap is connected to the upper end of the drain pipe. The upper end of the drain cap has a first drain hole and a flange. The flange surrounds the outer periphery of the first drain hole. The side wall of the drain cap has a second drain hole. The flange has a second drain connecting hole. A drain connecting pipe is connected between the second drain connecting hole and the second drain hole.

[0026] A vehicle according to a third aspect of the present invention includes: a sunroof drainage system according to a first aspect of the present invention or a drainage device according to a second aspect of the present invention.

[0027] According to the embodiments of the present invention, by including a sunroof drainage system according to the first aspect of the present invention or a drainage device according to the second aspect of the present invention, the vehicle can prevent external noise from entering the vehicle through the end of the sunroof drainage pipe, thereby improving the overall NVH performance of the vehicle; and can also prevent foreign objects from being sucked into the sunroof drainage pipe through the end of the sunroof drainage pipe, thus preventing blockage of the sunroof drainage pipe and improving the sunroof drainage performance.

[0028] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0029] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0030] Figure 1 This is a schematic diagram of a skylight drainage system according to some embodiments of the present invention;

[0031] Figure 2 yes Figure 1 Top view of the drainage cap;

[0032] Figure 3 yes Figure 1 Side view of the center drainage cap;

[0033] Figure 4 yes Figure 1 A schematic diagram showing the connection between the drain cap and the drain pipe;

[0034] Figure 5 yes Figure 1 A partial schematic diagram of the central drainage pipe.

[0035] Figure label:

[0036] 100. Skylight drainage system;

[0037] 10. Skylight drain pipe; 11. First sealing element; 12. Second sealing element; 13. Main pipe section; 14. Extension pipe section;

[0038] 20. Drainage trough;

[0039] 30. Main drain pipe; 31. Drain connection pipe; 32. Drain cap; 321. First drain hole; 33. Flanged flange; 34. Second drain connection hole; 35. Second drain hole; 36. Drain pipe; 37. Drain outlet; 38. Valve;

[0040] 41. Front panel; 42. First panel; 43. First through hole; 44. Second panel; 45. First drainage connection hole; 46. Third panel. Detailed Implementation

[0041] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0042] The following is for reference. Figures 1-5 A sunroof drainage system 100 and a vehicle according to an embodiment of the present invention are described.

[0043] According to a first aspect of the present invention, a skylight drainage system 100 includes: a skylight drainage pipe 10, a drainage channel 20, and a main drainage pipe 30.

[0044] Reference Figure 1The upper end of the sunroof drain pipe 10 is adapted to be located at the sunroof. For example, the upper end of the sunroof drain pipe 10 is provided with a water inlet, which is located at the end of the sunroof drain pipe 10 near the sunroof. Accumulated water can enter the sunroof drain pipe 10 from the water inlet and flow downward through the sunroof drain pipe 10. The drain channel 20 is formed in the front bulkhead 41 and is located at the junction of the windshield and the front hood. Water on the windshield can flow downward into the drain channel 20. The drain manifold 30 is located below the drain channel 20 and is connected to the drain channel 20. The drain channel 20 can serve as a water buffer space. Water falling from the windshield can be buffered in the drain channel 20. The water in the drain channel 20 can be discharged from the drain manifold 30 and discharged to the outside of the vehicle from the end of the drain manifold 30.

[0045] The lower end of the skylight drain pipe 10 is connected to the main drain pipe 30, and the lower end of the skylight drain pipe 10 is also connected to the main drain pipe 30. When there is water in the skylight, the water flows from the upper end of the skylight drain pipe 10 into the skylight drain pipe 10, and then flows directly from the lower end of the skylight drain pipe 10 into the main drain pipe 30, and finally is discharged through the main drain pipe 30.

[0046] When the vehicle is in motion, the windshield blocks the wind, causing the airflow to swirl at the drainage channel 20, resulting in higher air pressure at the drainage channel 20. By connecting the lower end of the sunroof drainage pipe 10 to the main drainage pipe 30, and ensuring that the lower end of the sunroof drainage pipe 10 is connected to the main drainage pipe 30, the lower end of the sunroof drainage pipe 10 is not located in the high-pressure environment area of ​​the drainage channel 20. This creates a low-pressure environment at the end of the sunroof drainage pipe 10, preventing external noise from entering the vehicle through the sunroof drainage pipe 10 and improving the overall NVH performance. Furthermore, it also prevents foreign objects from being sucked into the sunroof drainage pipe 10, thus avoiding blockage and improving the sunroof drainage performance.

[0047] According to the sunroof drainage system 100 of the present invention, by connecting the lower end of the sunroof drainage pipe 10 to and communicating with the drainage manifold 30, water flowing through the sunroof drainage pipe 10 can be discharged through the drainage manifold 30, while avoiding the end of the sunroof drainage pipe 10 being in a high-pressure environment. This makes the environment at the end of the sunroof drainage pipe 10 a low-pressure area, thereby preventing external noise from entering the vehicle through the end of the sunroof drainage pipe 10, improving the overall NVH performance of the vehicle. Furthermore, it also prevents foreign objects from being sucked into the sunroof drainage pipe 10 through the end of the sunroof drainage pipe 10, thus preventing blockage of the sunroof drainage pipe 10 and improving the sunroof drainage performance.

[0048] According to some embodiments of the present invention, with reference to Figure 1 and Figure 3 A first drainage connection hole 45 and a second drainage connection hole 34 are formed on the bottom wall of the drainage channel 20. A first drainage hole 321 is formed at the upper end of the drainage main pipe 30, and the upper end of the drainage main pipe 30 is inserted into the first drainage connection hole 45. A second drainage hole 35 is formed on the side wall of the drainage main pipe 30. The lower end of the sunroof drainage pipe 10 is inserted into the second drainage connection hole 34. A drainage connection pipe 31 connects the second drainage connection hole 34 and the second drainage connection hole 35. By connecting the first drainage connection hole and the second drainage connection hole 34 with the second drainage connection hole 35, the lower end of the sunroof drainage pipe 10 can be easily connected and connected to the drainage main pipe 30 through the drainage connection pipe 31. This also isolates the space inside the sunroof drainage pipe 10 from the high-pressure environment of the drainage channel 20, preventing foreign objects or noise from outside the vehicle from being sucked into the sunroof drainage pipe 10 through pressure difference.

[0049] According to some embodiments of the present invention, with reference to Figure 1 and Figure 3 A first sealing element 11 is provided between the lower end of the sunroof drain pipe 10 and the inner peripheral wall of the second drain connection hole 34. By providing the first sealing element 11 between the lower end of the sunroof drain pipe 10 and the inner peripheral wall of the second drain connection hole 34, the sealing effect between the lower end of the sunroof drain pipe 10 and the inner peripheral wall of the second drain connection hole 34 can be improved, preventing foreign objects or noise from outside the vehicle from being sucked into the sunroof drain pipe 10 from near the second drain connection hole 34 through pressure difference. Optionally, the first sealing element 11 can be a rubber part.

[0050] According to some embodiments of the present invention, a first sealing member 11 is sleeved on the lower end of the sunroof drain pipe 10, and an adhesive layer is provided between the outer peripheral wall of the first sealing member 11 and the inner peripheral wall of the second drain connection hole 34. By providing an adhesive layer between the outer peripheral wall of the first sealing member 11 and the inner peripheral wall of the second drain connection hole 34, the connection between the first sealing member 11 and the second drain connection hole 34 can be made tighter, and the sealing effect of the first sealing member 11 on the lower end of the sunroof drain pipe 10 and the inner peripheral wall of the second drain connection hole 34 can be better, preventing foreign objects or noise from outside the vehicle from being sucked into the sunroof drain pipe 10 from near the second drain connection hole 34 through pressure difference.

[0051] According to some embodiments of the present invention, with reference to Figure 1The front bulkhead 41 includes a first bulkhead 42 located above and behind the drainage channel 20. A first through hole 43 is formed on the first bulkhead 42, through which the sunroof drainage pipe 10 passes. By providing the first through hole 43 on the first bulkhead 42 and allowing the sunroof drainage pipe 10 to pass through the first through hole 43, it is easier to guide the sunroof drainage pipe 10 from inside the vehicle to outside the vehicle and connect it to the main drainage pipe 30. Furthermore, the first through hole 43 can limit and fix the sunroof drainage pipe 10, preventing it from shaking.

[0052] According to some embodiments of the present invention, with reference to Figure 1 A second seal 12 is fitted onto the sunroof drain pipe 10, and the second seal 12 is used to seal the first through hole 43. By using the second seal 12 to seal the first through hole 43, external water can be prevented from entering the vehicle through the first through hole 43. Optionally, the second seal 12 can be a rubber part.

[0053] According to some embodiments of the present invention, with reference to Figure 1 The sunroof drain pipe 10 includes a main pipe section 13 and an extension pipe section 14. The upper end of the main pipe section 13 is adapted to be located at the sunroof, and the lower end of the main pipe section 13 passes through a first through hole 43. The upper end of the extension pipe section 14 is connected to the lower end of the main pipe section 13, and the lower end of the extension pipe section 14 is inserted into a second drain connection hole 34. The main pipe section 13 and the extension pipe section 14 are formed independently. By forming the main pipe section 13 and the extension pipe section 14 independently, the installation of the sunroof drain pipe 10 can be made more convenient. For example, the extension pipe section 14 and the main drain pipe 30 can be installed on the drain channel 20 first, and then the extension pipe section 14 can be connected to the main pipe section 13. The connection point between the extension pipe section 14 and the main pipe section 13 is on the outside of the vehicle body, which is more convenient during the connection process.

[0054] According to some embodiments of the present invention, with reference to Figures 2-5 The main drain pipe 30 includes a drain cap 32 and a drain pipe 36, which are independently formed. The drain cap 32 is connected to the upper end of the drain pipe 36. The upper end of the drain cap 32 has a first drain hole 321 and a flange 33. The flange 33 surrounds the outer periphery of the first drain hole 321. The side wall of the drain cap 32 has a second drain hole 35. The front panel 41 includes a second panel 44 located on the bottom surface of the drain trough 20. The second panel 44 has a first drain connection hole 45. The flange 33 is connected to the second panel 44. The flange 33 and the second panel 44 together form the bottom wall of the drain trough 20. By connecting the flange 33 to the second panel 44 and surrounding the outer periphery of the first drain connection hole 45, and by having the flange 33 and the second panel 44 together form the bottom wall of the drain trough 20, the drain cap 32 can more easily collect the water in the drain trough 20 and discharge it through the drain pipe 36, thus preventing excessive water accumulation in the drain trough 20.

[0055] According to some embodiments of the present invention, with reference to Figure 2 The flange 33 is snapped and fixed to the second enclosure 44. By snapping and fixing the flange 33 to the second enclosure 44, the drain cap 32 can be fixed relative to the second enclosure 44, preventing the drain cap 32 from moving around and thus failing to collect the water in the drain trough 20.

[0056] According to some embodiments of the present invention, with reference to Figure 2 and Figure 3 The second drainage connection hole 34 is formed on the flange 33. By setting the second drainage connection hole 34 on the flange 33, the reduction in body strength caused by drilling holes in the second panel 44 can be avoided.

[0057] According to some embodiments of the present invention, the drain connecting pipe 31 and the drain cap 32 are integrally formed. By making the drain connecting pipe 31 and the drain cap 32 integrally formed, the number of parts in the sunroof drainage system 100 can be reduced, facilitating assembly.

[0058] According to some embodiments of the present invention, with reference to Figure 2 and Figure 3 The lower end of the drain cap 32 is snapped into the upper end of the drain pipe 36. By snapping the lower end of the drain cap 32 into the upper end of the drain pipe 36, the drain cap 32 can be fixed relative to the drain pipe 36, and the water collected by the drain cap 32 can flow into the drain pipe 36; moreover, the snap-fit ​​connection does not require additional mating parts such as rubber plugs, thus reducing costs.

[0059] According to some embodiments of the present invention, with reference to Figure 4 The front bulkhead 41 includes a third bulkhead 46, which is located below the drainage channel 20. A drainage pipe 36 passes through and is fixed relative to the third bulkhead 46. By having the drainage pipe 36 pass through and be fixed relative to the third bulkhead 46, the third bulkhead 46 can limit and fix the drainage pipe 36, preventing it from shaking and damaging other components. For example, the drainage pipe 36 can be snapped into place with the third bulkhead 46.

[0060] According to some embodiments of the present invention, both the drain cap 32 and the drain pipe 36 are plastic parts. By making both the drain cap 32 and the drain pipe 36 plastic parts, they can have better corrosion resistance and avoid rusting. For example, the drain cap 32 and the drain pipe 36 can be manufactured by injection molding.

[0061] According to some embodiments of the present invention, both the drain cap 32 and the drain pipe 36 are ABS plastic parts. By making the drain cap 32 and the drain pipe 36 ABS plastic parts, the drain cap 32 and the drain pipe 36 have high structural strength and reduce deformation.

[0062] According to some embodiments of the present invention, with reference to Figure 5 The drain manifold 30 has a drain outlet 37 at its end, which is used to drain water outside the vehicle. A valve 38 is provided at the end of the drain manifold 30, which is used to open and close the drain outlet 37. By providing a valve 38 at the end of the drain manifold 30, the drain outlet 37 can be closed when there is no need for drainage, preventing foreign objects from entering the drain manifold 30 through the drain outlet 37 and causing blockage.

[0063] According to some embodiments of the present invention, a return spring is connected between valve 38 and drain manifold 30. The return spring is used to drive valve 38 to close drain outlet 37. When there is no drainage demand at drain outlet 37, the return spring drives valve 38 to close drain outlet 37; when there is a drainage demand at drain outlet 37, the flowing water can open valve 38 and discharge from drain manifold 30. By connecting a return spring between valve 38 and drain manifold 30, a one-way valve can be formed to prevent foreign objects from entering drain manifold 30 through drain outlet 37 and causing blockage; moreover, it does not require electrical control and has a simple structure.

[0064] According to a second aspect of the present invention, a drainage device includes a main drainage pipe 30. The main drainage pipe 30 has a first drainage hole 321 and a second drainage hole 35 formed thereon. The first drainage hole 321 is used to communicate with a drainage channel 20, which is formed on the front bulkhead 41 and located at the junction of the windshield and the front hood. The second drainage hole 35 is used to communicate with a sunroof drainage pipe 10.

[0065] When there is water in the skylight, the water flows from the upper end of the skylight drain pipe 10 into the skylight drain pipe 10, passes through the skylight drain pipe 10, and then exits the skylight drain pipe 10 through the second drain hole 35 and flows directly into the main drain pipe 30, and finally is discharged through the main drain pipe 30.

[0066] According to the drainage device of the present invention, by including a first drainage hole 321 for communicating with the drainage channel 20 and a second drainage hole 35 for communicating with the sunroof drainage pipe 10, the environment at the end of the sunroof drainage pipe 10 can be made into a low-pressure area, preventing external noise from entering the vehicle through the end of the sunroof drainage pipe 10, thereby improving the overall NVH performance of the vehicle; and also preventing foreign objects from being sucked into the sunroof drainage pipe 10 through the end of the sunroof drainage pipe 10, thus preventing blockage of the sunroof drainage pipe 10 and improving the sunroof drainage performance.

[0067] According to some embodiments of the present invention, the main drain pipe 30 includes a drain cap 32, a drain pipe 36, and a drain connecting pipe 31. The drain pipe 36 and the drain cap 32 are formed independently. The drain cap 32 is connected to the upper end of the drain pipe 36. The upper end of the drain cap 32 has a first drain hole 321 and a flange 33. The flange 33 surrounds the outer periphery of the first drain hole 321. A second drain hole 35 is formed on the side wall of the drain cap 32. A second drain connecting hole 34 is formed on the flange 33. The drain connecting pipe 31 connects the second drain connecting hole 34 and the second drain hole 35. By setting the second drain connecting hole 34 on the flange 33, the reduction in vehicle body strength caused by drilling holes in the second panel 44 can be avoided.

[0068] When there is water in the skylight, the water flows into the skylight drain pipe 10 from the upper end of the skylight drain pipe 10, passes through the skylight drain pipe 10, and then leaves the skylight drain pipe 10 through the second drain connection hole 34 and flows into the drain connection pipe 31. It flows along the drain connection pipe 31, flows into the drain pipe 36 through the second drain hole 35, and is finally discharged through the drain pipe 36.

[0069] A vehicle according to a third aspect of the present invention includes: a sunroof drainage system 100 according to a first aspect of the present invention or a drainage device according to a second aspect of the present invention.

[0070] According to the embodiments of the present invention, by including the sunroof drainage system 100 according to the first aspect of the present invention or the drainage device according to the second aspect of the present invention, the vehicle can prevent external noise from entering the vehicle through the end of the sunroof drainage pipe 10, thereby improving the overall NVH performance of the vehicle; and it can also prevent foreign objects from being sucked into the sunroof drainage pipe 10 through the end of the sunroof drainage pipe 10, thereby preventing blockage of the sunroof drainage pipe 10 and improving the sunroof drainage performance.

[0071] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0072] In the description of this invention, "first feature" and "second feature" may include one or more of the features.

[0073] In the description of this invention, "a plurality of" means two or more.

[0074] In the description of this invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0075] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0076] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0077] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A skylight drainage system, characterized in that, include: Skylight drain pipe, the upper end of which is adapted to be located at the skylight; A drainage channel is formed on the front bulkhead and located at the junction of the front windshield and the front hood. A first drainage connection hole and a second drainage connection hole are formed on the bottom wall of the drainage channel. A main drain pipe is located below and communicates with the drainage trough. The lower end of the skylight drain pipe is connected to and communicates with the main drain pipe. A first drain hole is formed at the upper end of the main drain pipe, and the upper end of the main drain pipe is inserted into the first drain connection hole. A second drain hole is formed on the side wall of the main drain pipe, and the lower end of the skylight drain pipe is inserted into the second drain connection hole. A drain connection pipe is connected between the second drain connection hole and the second drain hole.

2. The skylight drainage system according to claim 1, characterized in that, A first sealing element is provided between the lower end of the skylight drain pipe and the inner peripheral wall of the second drain connection hole.

3. The skylight drainage system according to claim 2, characterized in that, The first sealing element is sleeved on the lower end of the sunroof drain pipe, and an adhesive layer is provided between the outer peripheral wall of the first sealing element and the inner peripheral wall of the second drain connection hole.

4. The skylight drainage system according to claim 1, characterized in that, The front panel includes a first panel located above and behind the drainage channel, with a first through hole formed on the first panel, through which the skylight drainage pipe passes.

5. The skylight drainage system according to claim 4, characterized in that, A second sealing element is fitted onto the skylight drain pipe, and the second sealing element is used to seal the first through hole.

6. The skylight drainage system according to claim 5, characterized in that, The skylight drain pipe includes a main pipe section and an extension pipe section. The upper end of the main pipe section is adapted to be located at the skylight. The lower end of the main pipe section passes through the first through hole. The upper end of the extension pipe section is connected to the lower end of the main pipe section. The lower end of the extension pipe section is inserted into the second drain connection hole. The main pipe section and the extension pipe section are formed independently.

7. The skylight drainage system according to claim 1, characterized in that, The main drain pipe includes a drain cap and a drain pipe, which are formed independently. The drain cap is connected to the upper end of the drain pipe. The upper end of the drain cap has a first drain hole and a flange. The flange surrounds the outer periphery of the first drain hole. The side wall of the drain cap has a second drain hole. The front panel includes a second panel located on the bottom surface of the drain trough. The second panel has a first drain connection hole. The flange is connected to the second panel. The flange and the second panel together constitute the bottom wall of the drain trough.

8. The skylight drainage system according to claim 7, characterized in that, The flange is snapped and fixed to the second enclosure.

9. The skylight drainage system according to claim 7, characterized in that, The second drainage connection hole is formed on the flange.

10. The skylight drainage system according to claim 9, characterized in that, The drainage connecting pipe and the drainage cap are integrally formed.

11. The skylight drainage system according to claim 7, characterized in that, The lower end of the drain cap is engaged with the upper end of the drain pipe.

12. The skylight drainage system according to claim 7, characterized in that, The front panel includes a third panel located below the drainage channel, and the drainage pipe passes through the third panel and is fixed relative to the third panel.

13. The skylight drainage system according to any one of claims 1-12, characterized in that, The drain pipe has a drain outlet at its end, which is used to discharge water outside the vehicle. The drain pipe also has a valve at its end, which is used to open and close the drain outlet.

14. The skylight drainage system according to claim 13, characterized in that, A return spring is connected between the valve and the drain main pipe, and the return spring is used to drive the valve to close the drain outlet.

15. A drainage device, characterized in that, include: A main drain pipe is provided, on which a first drain hole and a second drain hole are formed. The first drain hole is used to communicate with a drain channel, which is formed on the front bulkhead and located at the junction of the windshield and the hood. The second drain hole is used to communicate with a sunroof drain pipe.

16. The drainage device according to claim 15, characterized in that, The main drain pipe includes a drain cap, a drain pipe, and a drain connecting pipe. The drain pipe and the drain cap are formed independently. The drain cap is connected to the upper end of the drain pipe. The upper end of the drain cap has a first drain hole and a flange. The flange surrounds the outer periphery of the first drain hole. The side wall of the drain cap has a second drain hole. The flange has a second drain connecting hole. A drain connecting pipe connects the second drain connecting hole and the second drain hole.

17. A vehicle, characterized in that, include: The skylight drainage system according to any one of claims 1-14 or the drainage device according to any one of claims 15-16.

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