Vehicle body back door seam allowance sealing structure, vehicle body and vehicle

Abstract

The invention provides a vehicle body back door seam allowance sealing structure, a vehicle body and a vehicle, the vehicle body back door seam allowance sealing structure comprises a top cover rear cross beam, two side wall gutter channels, two tail lamp mounting plates and a rear wall plate which are sequentially connected end to end to form a back door frame, and an annular seam allowance edge is formed on the back door frame; the first sealing strip is fixed to the annular spigot edge; a first water retaining rib protruding towards the outside of the vehicle is formed at the position, close to the annular spigot edge, of the top cover rear cross beam; second water retaining ribs protruding towards the outside of the vehicle are formed in the positions, close to the annular spigot edge, of the two side wall water flowing grooves correspondingly. Third water retaining ribs protruding towards the outside of the automobile are formed in the positions, close to the annular spigot edge, of the two tail lamp mounting plates respectively. And a fourth water retaining rib protruding towards the outside of the vehicle is formed on the rear panel close to the annular spigot edge. According to the invention, the water flow is intercepted and buffered by the water retaining ribs, so that a large amount of water flow is prevented from directly impacting the sealing back door and the first sealing strip of the annular spigot edge, and the water flow can be prevented from entering a vehicle through the first sealing strip.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a back door stop mouth sealing structure of a vehicle body, a vehicle body and a vehicle. BACKGROUND

[0002] Nowadays, the functions of automobiles are more and more rich, and the performance of water navigation or deep water wading of vehicles is also required, so the requirement for the sealing performance of automobiles is also higher and higher.

[0003] In the prior art, the sealing structure of the back door stop mouth is relatively fixed, that is, a sealing strip is installed on the vertical surface of the stop mouth edge, and the sealing surface of the back door inner plate is pressed to form a seal. This structure has no problem under normal working conditions, but under special working conditions such as water navigation, deep water wading, heavy rain and the like, a large amount of water flow directly impacts the sealing strip, which is easy to cause water leakage or water to enter the sealing strip from the inside of the sealing strip and then flow into the vehicle, resulting in water entering the vehicle compartment and rusting of the sheet metal. SUMMARY

[0004] Therefore, the present application provides a back door stop mouth sealing structure of a vehicle body, a vehicle body and a vehicle to solve the above technical problems.

[0005] The back door stop mouth sealing structure of the vehicle body provided by the present application comprises: A roof rear cross beam, two side wall water flow channels, two tail lamp mounting plates and a rear wall plate are sequentially connected in a head-tail manner to form a back door frame, and an annular stop mouth edge is formed on the back door frame; A first sealing strip is fixed to the annular stop mouth edge; The roof rear cross beam is formed with a first water blocking rib protruding outward of the vehicle at a position close to the annular stop mouth edge; The two side wall water flow channels are respectively formed with a second water blocking rib protruding outward of the vehicle at a position close to the annular stop mouth edge; The two tail lamp mounting plates are respectively formed with a third water blocking rib protruding outward of the vehicle at a position close to the annular stop mouth edge; The rear wall plate is formed with a fourth water blocking rib protruding outward of the vehicle at a position close to the annular stop mouth edge.

[0006] Optionally, the first water blocking rib, the two second water blocking ribs, the two third water blocking ribs and the fourth water blocking rib are sequentially connected in a head-tail manner.

[0007] Optionally, the first water blocking rib, the second water blocking rib, the third water blocking rib and the fourth water blocking rib are respectively arranged in parallel with the annular stop mouth edge at the corresponding positions.

[0008] Optionally, the annular stop edge is parallel to the back door sealing surface.

[0009] Optionally, the first sealing strip includes a U-shaped base and a bubble tube, wherein the U-shaped base is fixedly connected to the annular stop edge, and the bubble tube is fixed to the side wall of the U-shaped base.

[0010] Optionally, the U-shaped base clamps the annular stop edge to achieve a snap-fit ​​connection with the annular stop edge.

[0011] Optionally, the bubble tube protrudes towards the axial direction of the back door frame, forming a curved surface on the side facing away from the axial direction of the back door frame.

[0012] Optionally, the vehicle tailgate stop sealing structure further includes: a second sealing strip, which is used to fix to the inner panel of the tailgate. After the tailgate is closed, the second sealing strip abuts against the first water-blocking rib, the second water-blocking rib, the third water-blocking rib, and the fourth water-blocking rib.

[0013] The present invention also provides a vehicle body including the vehicle body tailgate sealing structure described in any of the above claims.

[0014] The present invention also provides a vehicle comprising the aforementioned vehicle body.

[0015] The technical solutions provided by this invention have at least the following beneficial effects compared with the prior art: By employing the tailgate sealing structure, body, and vehicle of this invention, when water flows in through the gap between the tailgate and the rear crossbeam of the roof, the side water channel, the taillight mounting plate, and the rear panel, the water flow is intercepted and buffered by the first, second, third, and fourth water-blocking ribs, preventing a large amount of water from directly impacting the first sealing strip at the edge of the sealing tailgate and the annular stop, thus preventing water from entering the vehicle through the first sealing strip. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a vehicle tailgate sealing structure according to an embodiment of the present invention; Figure 2 for Figure 1 A partial enlarged view of point A of the sealing structure at the rear door of the vehicle shown. Figure 3 for Figure 1 The cross-sectional view of the BB position of the tailgate sealing structure shown in the figure; Figure 4 for Figure 3 The image shows a partial enlarged cross-sectional view of the BB position of the tailgate sealing structure. Figure 5 for Figure 1 The cross-sectional view of the sealing structure of the tailgate shown in the figure is at the CC position. Figure 6 A sectional view of a back door sealing structure of a vehicle body according to another embodiment of the present application.

[0017] Reference signs: 1: roof rear cross beam; 2: side wall gutter; 3: tail lamp mounting plate; 4: rear wall; 5: first sealing strip; 51: U-shaped base body; 52: bubble tube; 6: annular sealing edge; 7: first water blocking rib; 8: second water blocking rib; 9: third water blocking rib; 10: fourth water blocking rib; 11: second sealing strip; 12: back door; 121: back door outer panel; 122: back door inner panel; 123: back door sealing surface; 13: side wall outer panel. DETAILED DESCRIPTION

[0018] The embodiments of the present application will be further described below with reference to the drawings. In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship shown in the drawings, and are merely used for the convenience of the simplified description of the present application, and do not indicate or imply that the device or component referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0019] Figure 1 A schematic view of a back door sealing structure of a vehicle body according to an embodiment of the present application; Figure 2 A Figure 1 An enlarged view of a portion A of the back door sealing structure of the vehicle body shown in the figure; Figure 3 A Figure 1 A sectional view of a B-B position of the back door sealing structure of the vehicle body shown in the figure; Figure 4 A Figure 3 An enlarged view of a portion of the sectional view of the B-B position of the back door sealing structure of the vehicle body shown in the figure; Figure 5 A Figure 1 A sectional view of a C-C position of the back door sealing structure of the vehicle body shown in the figure. As Figures 1-5As shown, the body back door stopper sealing structure includes a roof rear cross beam 1, two side wall gutters 2, two tail lamp mounting plates 3 and a rear wall 4, the roof rear cross beam 1, the two side wall gutters 2, the two tail lamp mounting plates 3 and the rear wall 4 are sequentially connected to form a back door frame, and an annular stopper edge 6 is formed on the back door frame; further comprising a first sealing strip 5, the first sealing strip 5 is fixed to the annular stopper edge 6; the roof rear cross beam 1 is formed with a first water baffle 7 protruding outward at a position close to the annular stopper edge 6; the two side wall gutters 2 are respectively formed with a second water baffle 8 protruding outward at a position close to the annular stopper edge 6; the two tail lamp mounting plates 3 are respectively formed with a third water baffle 9 protruding outward at a position close to the annular stopper edge 6; the rear wall 4 is formed with a fourth water baffle 10 protruding outward at a position close to the annular stopper edge 6.

[0020] The back door 12 includes a back door outer plate 121 and a back door inner plate 122, and the back door inner plate 122 has a ring of planar structures, which are pressed against the first sealing strip 5 to form a seal when the back door 12 is closed, and the ring of planar structures is a back door sealing surface 123. After the back door 12 is closed, the back door sealing surface 123 presses the first sealing strip 5, and gaps exist between the back door 12 and the roof rear cross beam 1, the side wall gutters 2, the tail lamp mounting plates 3 and the rear wall 4, water flows into the gaps, the first water baffles 7, the second water baffles 8, the third water baffles 9 and the fourth water baffles 10 are respectively arranged on the roof rear cross beam 1, the side wall gutters 2, the tail lamp mounting plates 3 and the rear wall 4, and are arranged on the side of the first sealing strip 5 facing the corresponding gap, so that when water flows into the gaps between the back door 12 and the roof rear cross beam 1, the side wall gutters 2, the tail lamp mounting plates 3 and the rear wall 4, the water does not directly impact the first sealing strip 5, but is first intercepted by the corresponding first water baffles 7, second water baffles 8, third water baffles 9 or fourth water baffles 10, and is guided to flow along the extension direction of each water baffle, and is discharged outside the vehicle at the extension end of each water baffle. When a large amount of water flows into the gap, the height of the first water baffles 7, the second water baffles 8, the third water baffles 9 or the fourth water baffles 10 is not enough to completely intercept all the water, part of the water flows over the corresponding water baffle, and after being buffered by the corresponding water baffle, flows to the first sealing strip 5. Because the impact force of the water on each water baffle is partially released, the first sealing strip 5 will not be subjected to excessive direct impact force, and the first sealing strip 5 will not leak due to water impact.

[0021] The back door stopper sealing structure of the body can prevent a large amount of water from directly impacting the first sealing strip 5 when water flows into the gaps between the back door 12 and the roof rear cross beam 1, the side wall gutters 2, the tail lamp mounting plates 3 and the rear wall 4, by means of the interception and buffering of the first water baffles 7, the second water baffles 8, the third water baffles 9 and the fourth water baffles 10, and can avoid water flowing into the vehicle through the first sealing strip 5.

[0022] like Figure 1 and Figure 2 As shown, the rear crossbeam 1 and rear panel 4 extend almost horizontally, while the two side drainage channels 2 and two taillight mounting plates 3 extend almost vertically. The left and right ends of the rear crossbeam 1 are connected to the upper ends of one side drainage channel 2, and the lower end of one side drainage channel 2 is connected to the upper end of one taillight mounting plate 3. The left and right ends of the rear panel 4 are connected to the lower ends of one taillight mounting plate 3, thus forming an annular tailgate frame. The free end of the tailgate frame forms an annular stop edge 6. The first sealing strip 5 is set to be annular to match the annular stop edge 6, so as to seal the entire annular stop edge 6 and the tailgate 12 after the tailgate 12 is closed. The rear crossbeam 1 of the roof, the side drainage channel 2, the taillight mounting plate 3, and the rear panel 4 are respectively equipped with a first water-blocking rib 7, a second water-blocking rib 8, a third water-blocking rib 9, and a fourth water-blocking rib 10 protruding outwards from the vehicle. The first water-blocking rib 7 extends in the same direction as the rear crossbeam 1 of the roof, the second water-blocking rib 8 extends in the same direction as the side drainage channel 2, the third water-blocking rib 9 extends in the same direction as the taillight mounting plate 3, and the fourth water-blocking rib 10 extends in the same direction as the rear panel 4. Figures 3-5 As shown, the first water-blocking rib 7 protrudes from the rear crossbeam 1 of the roof near the annular stop edge 6; the second water-blocking rib 8 protrudes from the side water channel 2 near the annular stop edge 6; similarly, the third water-blocking rib 9 protrudes from the taillight mounting plate 3 near the annular stop edge 6; and the fourth water-blocking rib 10 protrudes from the rear panel 4 near the annular stop edge 6. Figure 3 and Figure 4 For example, water flows into the gap between the roof beam 1 and the tailgate 12. When the water flow is small, the water is intercepted by the raised first water-blocking rib 7 and flows along the extension direction of the first water-blocking rib 7, eventually flowing down from the end of the extension direction of the first water-blocking rib 7, without flowing to the first sealing strip 5. When the water flow is too large, the height of the first water-blocking rib 7 is insufficient to intercept the water flow. Therefore, after the water flow is blocked and buffered by the first water-blocking rib 7, the water flow with reduced impact force passes over the first water-blocking rib 7 and flows to the first sealing strip 5. However, because the impact force of the water flow is weakened, it will not impact the first sealing strip 5 with excessive impact force. Therefore, the first sealing strip 5 can achieve the sealing of the annular stop edge 6 and the tailgate sealing surface 123, preventing water from entering the vehicle. The working principle of the second water-blocking rib 8, the third water-blocking rib 9, and the fourth water-blocking rib 10 is similar to that of the first water-blocking rib 7, and will not be described in detail here. Depending on the actual application, the specific positions of the first water-blocking rib 7, the second water-blocking rib 8, the third water-blocking rib 9, and the fourth water-blocking rib 10 on the rear crossbeam 1 of the top cover, the side water channel 2, the taillight mounting plate 3, and the rear panel 4 can be adjusted, and the specific protrusion height can also be adjusted appropriately.

[0023] Optionally, the first water-blocking rib 7, the two second water-blocking ribs 8, the two third water-blocking ribs 9, and the fourth water-blocking rib 10 are connected end to end. This arrangement, by utilizing the water-blocking ribs connected end to end, prevents water from flowing through the gaps between adjacent water-blocking ribs to the first sealing strip 5, further preventing water leakage at the first sealing strip 5.

[0024] like Figure 1 and Figure 2 As shown, in this embodiment, the left and right ends of the first water-blocking rib 7 are respectively connected to the upper ends of the two second water-blocking ribs 8, the lower end of one second water-blocking rib 8 is connected to the upper end of one third water-blocking rib 9, and the left and right ends of the fourth water-blocking rib 10 are respectively connected to the lower end of one third water-blocking rib 9, thereby forming a complete circle of closed convex ribs. Additionally, as... Figures 3-5 As shown, a drainage ditch is formed between the closed rib, the rear crossbeam 1 of the top cover, and the side drainage channels 2 on both sides. When water flows down from the top cover, it can quickly flow out of the vehicle along the drainage ditch. Figure 5 The outer side of the middle side water trough 2 is the side outer plate 13.

[0025] Optionally, the first water-blocking rib 7, the second water-blocking rib 8, the third water-blocking rib 9, and the fourth water-blocking rib 10 are respectively arranged parallel to the annular stop edge 6 at their corresponding positions. This arrangement ensures that each water-blocking rib maintains an equal distance from the corresponding annular stop edge 6 within its respective extension range. Therefore, when the water flow is too large, after the water flows over each water-blocking rib, it ensures that the impact force on different positions of the first sealing strip 5 corresponding to each water-blocking rib is the same, avoiding excessive local impact force on the first sealing strip 5, which could lead to leakage at that point.

[0026] Optionally, the annular stop edge 6 is parallel to the back door sealing surface 123.

[0027] Traditionally, the tailgate's stop edge is turned upwards towards the tailgate, presenting a vertical surface. This means that when the tailgate is closed, the stop edge is perpendicular to the tailgate's sealing surface. The vertical stop edge provides unstable support for the sealing strip installed there, resulting in weak clamping force and a loose fit. When the water flow is large, water can easily force open the sealing strip and enter the vehicle interior. For example... Figures 3-5 As shown, in this embodiment, the annular stop edge 6 is arranged parallel to the back door sealing surface 123. The annular stop edge 6 has a certain extension width, allowing the first sealing strip 5 to be stably installed on the annular stop edge 6. After the back door 12 is closed, the back door sealing surface 123 compresses the first sealing strip 5, and the annular stop edge 6 provides more stable and powerful support for the first sealing strip 5, making the first sealing strip 5 more tightly compressed and further improving the sealing performance. Depending on the actual application, the extension width of the annular stop edge 6 can be appropriately adjusted, as long as the first sealing strip 5 can be stably installed on the annular stop edge 6, and after the back door 12 is closed, the annular stop edge 6 can provide sufficient support for the first sealing strip 5 so that the water flow cannot breach the first sealing strip 5.

[0028] Optionally, the first sealing strip 5 includes a U-shaped base 51 and a bubble tube 52. The U-shaped base 51 is fixedly connected to the annular stop edge 6, and the bubble tube 52 is fixed to the side wall of the U-shaped base 51. This arrangement makes the connection between the bubble tube 52 and the U-shaped base 51 more stable, which helps to improve the sealing performance.

[0029] like Figures 3-5 As shown, in this embodiment, the U-shaped base 51 is U-shaped in general, with its opening facing the annular stop edge 6. One side wall on each side of the opening faces the back door 12, and a bubble tube 52 is fixed on it. Compared with fixing the bubble tube 52 to the bottom wall of the U-shaped base 51, the installation area of ​​the side wall is larger, which is more conducive to the stable installation of the bubble tube 52. The bubble tube 52 is installed on the side wall of the U-shaped base 51 and is opposite to the back door sealing surface 123. After the back door 12 is closed, the bubble tube 52 is directly squeezed to ensure the sealing performance.

[0030] Optionally, the U-shaped base 51 clamps the annular stop edge 6, achieving a snap-fit ​​connection with the annular stop edge 6. This configuration simplifies the connection between the first sealing strip 5 and the annular stop edge 6, improving assembly efficiency while ensuring connection stability.

[0031] like Figure 4 As shown, in this embodiment, the opening of the U-shaped base 51 is set towards the annular stop edge 6, and the annular stop edge 6 is inserted into the U-shaped base 51. The sealing lip inside the U-shaped base 51 clamps and seals the annular stop edge 6, thereby achieving a stable connection between the U-shaped base 51 and the annular stop edge 6, while preventing water from flowing into the interior of the U-shaped base 51.

[0032] Optionally, the bubble tube 52 protrudes towards the axis of the back door frame, forming a curved surface on the side facing away from the axis of the back door frame. With this arrangement, when the back door 12 is closed, the back door 12 compresses the bubble tube 52. Under the compression, the side of the bubble tube 52 facing away from the axis of the back door frame bends further. The curved surface faces the gap between the back door frame and the back door 12, that is, towards the direction of water flow. The further bending of the curved surface after compression has a better water-blocking effect.

[0033] Figure 1 The axis of the middle rear door frame is its center. Figure 4 The right side of the central bubble tube 52 faces the axis of the back door frame, while the left side faces away from the axis of the back door frame, as shown below. Figure 4 As shown, the bubble tube 52 bulges towards the axis of the back door frame, forming a protrusion on the right side and a concave curved surface on the left side. The gap between the back door frame and the back door 12 is located on the left side of the bubble tube 52. After the back door 12 is closed, it further squeezes the bubble tube 52, increasing the degree of curvature of the bubble tube 52. The curved left side of the bubble tube 52 faces the direction of water flow, which can effectively intercept the water flow.

[0034] Figure 6 This is a cross-sectional view of the vehicle tailgate sealing structure according to another embodiment of the present invention, as shown below. Figure 6 As shown, optionally, the tailgate stop sealing structure further includes a second sealing strip 11. The second sealing strip 11 is used to fix to the inner panel 122 of the tailgate. After the tailgate 12 is closed, the second sealing strip 11 abuts against the first water-blocking rib 7, the second water-blocking rib 8, the third water-blocking rib 9, and the fourth water-blocking rib 10. With this arrangement, after the tailgate 12 is closed, the second sealing strip 11 abuts against the first water-blocking rib 7, the second water-blocking rib 8, the third water-blocking rib 9, and the fourth water-blocking rib 10 to form a first seal. This, together with the seal between the first sealing strip 5 at the annular stop edge 6 and the tailgate 12, forms a double-seal structure, greatly improving the sealing performance of the tailgate 12.

[0035] like Figure 6 As shown, the second sealing strip 11 is fixed on the inner panel 122 of the tailgate. It is also a ring structure and is set at the positions of the first water-blocking rib 7, the second water-blocking rib 8, the third water-blocking rib 9 and the fourth water-blocking rib 10. When the tailgate 12 is closed, the ring structure of the second sealing strip 11 abuts against each water-blocking rib to form a seal, which can block most of the water from entering. When the water flow is too large and some water flows through the second sealing strip 11, the water flows to the first sealing strip 5 and is blocked by the first sealing strip 5. Thus, with the double seal of the second sealing strip 11 and the first sealing strip 5, water is prevented from entering the vehicle through the tailgate 12.

[0036] The present invention also provides a vehicle body including the vehicle body tailgate sealing structure described in any of the above embodiments.

[0037] With the vehicle body of this invention, when water flows in through the gap between the tailgate 12 and the rear crossbeam 1 of the roof, the side water channel 2, the taillight mounting plate 3 and the rear panel 4, the water flow is intercepted and buffered by the first water-blocking rib 7, the second water-blocking rib 8, the third water-blocking rib 9 and the fourth water-blocking rib 10, preventing a large amount of water from directly impacting the first sealing strip 5 that seals the tailgate 12 and the annular stop edge 6, thus preventing water from entering the vehicle through the first sealing strip 5.

[0038] The present invention also provides a vehicle comprising the aforementioned vehicle body.

[0039] When water flows into the vehicle using the present invention through the gap between the tailgate 12 and the rear crossbeam 1 of the roof, the side water channel 2, the taillight mounting plate 3 and the rear panel 4, the water flow is intercepted and buffered by the first water-blocking rib 7, the second water-blocking rib 8, the third water-blocking rib 9 and the fourth water-blocking rib 10, preventing a large amount of water from directly impacting the first sealing strip 5 that seals the tailgate 12 and the annular stop edge 6, thus preventing water from entering the vehicle through the first sealing strip 5.

[0040] It should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalent features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A vehicle tailgate sealing structure, characterized in that, The back door frame is formed by sequentially connecting a roof rear cross beam, two side wall gutter, two tail lamp mounting plate and a rear wall in sequence, and an annular stopper edge is formed on the back door frame. A first sealing strip is fixed to the annular stopper edge. The roof rear cross beam is formed with a first water-blocking rib protruding outward at a position close to the annular stopper edge. The two side wall gutters are respectively formed with a second water-blocking rib protruding outward at a position close to the annular stopper edge. The two tail lamp mounting plates are respectively formed with a third water-blocking rib protruding outward at a position close to the annular stopper edge. The rear wall is formed with a fourth water-blocking rib protruding outward at a position close to the annular stopper edge.

2. The back door stopper sealing structure of the vehicle body according to claim 1, characterized in that: The first water-blocking rib, the two second water-blocking ribs, the two third water-blocking ribs and the fourth water-blocking rib are sequentially connected in sequence.

3. The back door stopper sealing structure of the vehicle body according to claim 2, characterized in that: The first water-blocking rib, the second water-blocking rib, the third water-blocking rib and the fourth water-blocking rib are respectively arranged in parallel with the annular stopper edge at the corresponding position.

4. The back door stopper sealing structure of the vehicle body according to any one of claims 1-3, characterized in that: The annular stopper edge is parallel to the back door sealing surface.

5. The back door stopper sealing structure of the vehicle body according to any one of claims 1-3, characterized in that: The first sealing strip comprises a U-shaped base body and a bubble tube, the U-shaped base body is fixedly connected with the annular stopper edge, and the bubble tube is fixed to the side wall of the U-shaped base body.

6. The back door stopper sealing structure of the vehicle body according to claim 5, characterized in that: The U-shaped base body clamps the annular stopper edge to achieve the clamping connection with the annular stopper edge.

7. The back door stopper sealing structure of the vehicle body according to claim 5, characterized in that: The bubble tube is raised towards the axial direction of the back door frame, and a curved surface is formed on the side opposite to the axial direction of the back door frame. The back door stopper sealing structure of the vehicle body according to any one of claims 1-8.

8. The weatherstrip seal for a back door of a vehicle body according to any one of claims 1 to 3, characterized in that, The back door stopper sealing structure of the vehicle body according to claim 9. ​ 9. A vehicle body, characterized by ​ 10. A vehicle characterized by comprising: ​

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