Rear door assembly and vehicle

Abstract

The application relates to the technical field of vehicle bodies, and provides a back door assembly and a vehicle. The back door assembly of the application comprises a back door sheet metal body and a window frame surrounding a window with the back door sheet metal body. The back door sheet metal body comprises a back door inner plate, a back door outer plate and a window sill reinforcing plate connected between the back door inner plate and the back door outer plate. The window sill reinforcing plate and the window frame are made of aluminum material, the window frame is internally provided with a cavity, the cavity extends along the extension path of the window frame, and the window frame is connected with the window sill reinforcing plate through the longitudinal beams on both sides and is welded. The back door assembly described in the application is made of aluminum material, the window frame is internally provided with a cavity, the cavity extends along the extension path of the window frame, the longitudinal beams of the window frame are connected with the window sill reinforcing plate through welding, the connection strength is high, and the structural strength and the safe reliability of the back door assembly can be better ensured.

Description

Technical Field

[0001] This application relates to the field of vehicle body technology, and in particular to a tailgate assembly. This application also relates to a vehicle using this tailgate assembly. Background Technology

[0002] A typical tailgate assembly includes a stamped steel outer tailgate panel, a stamped steel inner tailgate panel, and a stamped steel window sill reinforcement plate.

[0003] The outer panel of the rear door is welded to the inner panel of the rear door. A window is provided on both the inner and outer panels of the rear door, and a window sill reinforcement plate is welded between the outer and inner panels of the rear door and located at the lower edge of the window.

[0004] The tailgate assembly with the above structure is relatively heavy, which does not meet the requirements of vehicle lightweight design and is not conducive to energy conservation. Utility Model Content

[0005] In view of this, this application aims to provide a rear tailgate assembly that is lightweight and has good structural strength.

[0006] To achieve the above objectives, the technical solution of this application is implemented as follows: A tailgate assembly includes a tailgate sheet metal body and a window frame that forms a window with the tailgate sheet metal body; The rear door sheet metal body includes an inner rear door panel, an outer rear door panel, and a window sill reinforcing plate connected between the inner rear door panel and the outer rear door panel; Both the window sill reinforcement plate and the window frame are made of aluminum. The window frame has a cavity that extends along the extension path of the window frame. The window frame is welded to the window sill reinforcement plate through longitudinal beams on both sides.

[0007] Furthermore, the windowsill reinforcing plate includes an inner reinforcing plate riveted to the inner panel of the rear door, an outer reinforcing plate riveted to the outer panel of the rear door, and a connecting plate that connects the inner reinforcing plate and the outer reinforcing plate together. The inner panel reinforcement plate and the inner panel of the rear door are bonded together by structural adhesive, and the outer panel reinforcement plate and the outer panel of the rear door are bonded together by structural adhesive.

[0008] Furthermore, the connecting plate is provided with multiple first protrusions on both sides along the left and right direction of the vehicle. The multiple first protrusions on each side are arranged at intervals along the left and right direction of the vehicle. Each first protrusion protrudes to one side of the connecting plate and is connected to the outer plate reinforcing plate.

[0009] Furthermore, the outer plate reinforcing plate is provided with a first transverse reinforcing rib and a plurality of first longitudinal reinforcing ribs in the middle of the front side along the left-right direction of the vehicle. The first transverse reinforcing rib extends along the left-right direction of the vehicle and connects the two first protrusions near the middle. Multiple first longitudinal stiffeners are arranged at intervals along the left-right direction of the vehicle, and each first longitudinal stiffener is connected to the first transverse stiffener and the connecting plate respectively.

[0010] Furthermore, the lower part of the front side of each of the longitudinal beams is provided with a recess, and the window sill reinforcing plate has a first plate that is partially embedded in each of the recesses, a second plate that supports each of the longitudinal beams, and a third plate that is in contact with the inner side of each of the longitudinal beams. The window sill reinforcing plates are welded to the longitudinal beams via the first plate, the second plate, and the third plate on the corresponding sides of each longitudinal beam.

[0011] Furthermore, the upper part of the first plate is provided with a flange, and the first plate, the flange and the third plate form a cavity with an open rear side, and a plurality of second reinforcing ribs are arranged in a cross pattern in the cavity.

[0012] Furthermore, close to each of the longitudinal beams, the first plate and the outer panel of the rear door are connected together by a first connector passing through both; and / or, The window sill reinforcement plate has a fourth plate that fits into the hinge reinforcement plate. The fourth plate, the hinge reinforcement plate, and the inner panel of the rear door are connected together by a second connector that passes through all three.

[0013] Furthermore, the rear side of the outer plate reinforcing plate is provided with a plurality of second protrusions, a third transverse reinforcing rib, and a plurality of third longitudinal reinforcing ribs; Multiple second protrusions are arranged at intervals along the left-right direction of the vehicle and are located at the middle position of the outer plate reinforcing plate along the left-right direction of the vehicle. The third transverse reinforcing rib extends along the left-right direction of the vehicle and connects multiple second protrusions in sequence; each second protrusion is provided with the third longitudinal reinforcing rib, and each third longitudinal reinforcing rib extends from the corresponding second protrusion to the inner plate reinforcing plate.

[0014] Furthermore, the outer wall of the window frame is provided with a slot for installing a sealing strip, and the connection parts of the horizontal beam and the longitudinal beams on both sides of the window frame are provided with supporting corner joints. The sealing strip has a first sealing section that is engaged in the slot, and a second sealing section that surrounds the outer periphery of the support corner.

[0015] Compared with related technologies, this application has the following advantages: (1) The rear door assembly described in this application is made of aluminum material for both the window frame and the window sill reinforcement plate. The window frame has a cavity that extends along the extension path of the window frame, making the overall weight of the rear door assembly lighter, which meets the lightweight design requirements of the vehicle. Its application in the vehicle helps to reduce energy consumption. The longitudinal beam of the window frame and the window sill reinforcement plate are welded together, with high connection strength, which can better ensure the structural strength and safety and reliability of the rear door assembly. It can also better prevent the rear door assembly from shaking and making abnormal noises during vehicle operation.

[0016] (2) By setting an inner panel reinforcement plate, an outer panel reinforcement plate and a connecting plate, an integrated reinforcement structure system can be formed. The inner panel reinforcement plate is riveted to the inner panel of the back door, the outer panel reinforcement plate is riveted to the outer panel of the back door, and the connecting plate connects the inner panel reinforcement plate and the outer panel reinforcement plate together. This can better ensure the connection strength of the window sill reinforcement plate to the inner panel and the outer panel of the back door. The inner panel reinforcement plate is bonded to the inner panel of the back door, and the outer panel reinforcement plate is bonded to the outer panel of the back door. This can be matched with the riveting structure to further improve the connection strength of the window sill reinforcement plate to the inner panel and the outer panel of the back door. At the same time, it has a good sealing and sound insulation effect.

[0017] (3) Multiple first protrusions are arranged at intervals along the left and right directions of the vehicle, which is equivalent to adding multiple reinforcing ribs to the connecting plate. They can increase the bending stiffness of the connecting plate in the left and right directions and perpendicular to the protrusion direction, making the connecting plate less prone to bending deformation when subjected to external forces, thus maintaining the stability of the structure and improving the overall stiffness of the entire window sill reinforcement plate system and even the rear door.

[0018] (4) The first transverse reinforcing rib extends along the left and right direction of the vehicle, just like a crossbeam is set in the middle of the front side of the window sill reinforcing plate. Multiple first longitudinal reinforcing ribs are arranged at intervals along the left and right direction of the vehicle and are all connected to the first transverse reinforcing rib and the connecting plate, forming a grid-like reinforcing structure. This structure can effectively enhance the load-bearing capacity of the window sill reinforcing plate in the transverse and longitudinal directions and effectively prevent the window sill reinforcing plate from tearing or excessively deforming.

[0019] (5) A recessed part is provided at the lower part of the front side of the window frame to provide an installation position for the first plate, and the second plate can support the longitudinal beam. The third plate is attached to the inner side of the window frame. The window sill reinforcement plate is welded to the longitudinal beam of the window frame through the first plate, the second plate and the third plate. This structural form is conducive to ensuring the accuracy of the connection position, the connection strength and the structural strength between the window sill reinforcement plate and the longitudinal beam.

[0020] (6) The cavity formed by the first plate, the flange and the third plate can form a relatively closed structural system with certain bending and torsional stiffness. The multiple second reinforcing ribs arranged crosswise in the cavity can further enhance this stiffness. The cross reinforcing ribs are like building a grid-like frame inside the cavity, which can more effectively disperse and transmit stress from different directions, making the whole structure less prone to deformation when subjected to external forces, and greatly improving the overall structural stiffness of the rear door assembly.

[0021] (7) The first connector passes through the first plate and the outer panel of the rear door, thereby connecting the first plate and the outer panel of the rear door together, which can improve the connection strength between the first plate and the outer panel of the rear door. The fourth plate, the hinge reinforcement plate and the inner panel of the rear door are connected together by the second connector passing through the three, which can improve the connection strength of the hinge part and help improve the safety and reliability of the rear door assembly.

[0022] (8) The second protrusion can increase the material accumulation in the direction perpendicular to the surface of the outer plate reinforcing plate, thereby improving the resistance to local dents and impacts in this area. The third transverse reinforcing rib extends along the left and right direction of the vehicle, which can enhance the bending resistance of the outer plate reinforcing plate in the transverse direction. The third longitudinal reinforcing rib improves its bending and torsional resistance in the longitudinal direction. The three work together to significantly enhance the overall structural strength of the window sill reinforcing plate, enabling it to better withstand various complex loads encountered during vehicle operation.

[0023] (9) The sealing strip includes a first sealing section and a second sealing section. The first sealing section is inserted into the slot, and the second sealing section surrounds the outer periphery of the support corner. This can better ensure the sealing gap between the tailgate assembly and the counter parts. When the tailgate assembly is applied to a vehicle, it helps to improve the sealing reliability of the tailgate assembly.

[0024] Another object of this application is to provide a vehicle having a tailgate assembly as described above.

[0025] The vehicle described in this application, by using the above-mentioned tailgate assembly, can effectively reduce the weight of the vehicle due to the lighter overall weight of the tailgate assembly. Furthermore, since the window frame and window sill reinforcement plate are welded together, the overall structural strength of the tailgate assembly can be well guaranteed. When applied to a vehicle, it helps to improve the safety and reliability of the vehicle application. Attached Figure Description

[0026] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is an exemplary structural diagram of the rear tailgate assembly described in an embodiment of this application; Figure 2 for Figure 1 A structural diagram of the rear tailgate inner panel before it is assembled; Figure 3 for Figure 2 Enlarged view of part A; Figure 4 for Figure 2 Enlarged view of part B; Figure 5 This is an exemplary structural diagram of the window sill reinforcement plate described in an embodiment of this application; Figure 6 for Figure 5 A structural diagram from another perspective; Figure 7 for Figure 6 Enlarged view of part C; Figure 8 This is an exemplary structural diagram of a window frame described in an embodiment of this application; Figure 9 for Figure 8 Enlarged view of part D; Figure 10 This is an exemplary structural schematic diagram of the cross-section of the window frame described in an embodiment of this application; Figure 11 for Figure 10 This is another exemplary structural schematic diagram of the cross-section of the window frame described in the embodiments of this application; Figure 12 This is an exemplary structural diagram of the sealing strip described in an embodiment of this application; Figure 13 This is an exemplary structural diagram of the cross-section of the sealing strip described in an embodiment of this application.

[0027] Explanation of reference numerals in the attached figures: 1. Main sheet metal body of the rear door; 101. Rear door inner panel; 102. Rear door outer panel; 103. Window sill reinforcement plate; 104. Hinge reinforcement plate; 1031. Inner plate reinforcing plate; 1032. Outer plate reinforcing plate; 1033. Connecting plate; 1034. First boss; 1035. First transverse reinforcing rib; 1036. First longitudinal reinforcing rib; 1037. First plate body; 1038. Second plate body; 1039. Third plate body; 10310. Second reinforcing rib; 10311. Fourth plate body; 10312. Second boss; 10313. Third transverse reinforcing rib; 10314. Third longitudinal reinforcing rib; 103A, Riveting point; 103B, Flanged edge; 103C, Cavity; 2. Window frame; 201. Crossbeam; 202. Longitudinal beam; 20A. Cavity; 20B. Protrusion; 20C. Slot; 2021, Depression; 3. First connector; 4. Second connector; 5. Support corner joint; 6. Sealing strip; 601. First sealing section; 602. Second sealing section; 7. Rear door glass; 8. Adhesive. Detailed Implementation

[0028] To make the technical solution and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0030] Furthermore, it should be noted that in the description of this application, if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, these are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation on this application. In addition, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] Furthermore, in the description of this application, unless otherwise expressly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application in light of the specific circumstances.

[0032] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] In the accompanying drawings of this application, the front-rear direction refers to the front-rear direction of the vehicle, which usually refers to the length direction of the vehicle; the left-right direction refers to the left-right direction of the vehicle, which usually refers to the width direction of the vehicle; and the up-down direction refers to the height direction of the vehicle. In the drawings: the arrow points forward to the front of the vehicle, the arrow points backward to the rear of the vehicle, the arrow points upward to the top of the vehicle, and the arrow points downward to the bottom of the vehicle.

[0034] Sitting in the driver's seat facing the front of the car, the side with your left hand is the left side, and the side with your right hand is the right side. In the attached diagram, the left arrow points to the left side of the vehicle, and the right arrow points to the right side. The terms "inner" and "outer" are relative. "Inner" refers to the interior space of the vehicle, while "outer" refers to the outside of the vehicle, that is, the area away from the interior space.

[0035] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0036] An embodiment of the first aspect of this application provides a tailgate assembly, which improves the structure of the tailgate assembly by processing the window frame and the tailgate sheet metal body separately, and welding the window frame and the window sill reinforcement plate in the tailgate sheet metal body together, thereby better ensuring the overall structural strength of the tailgate assembly.

[0037] Meanwhile, by using aluminum for both the window frame and the window sill reinforcement plate, and by having a cavity extending along the window frame's extension path, the rear door assembly is lighter than existing stamped steel rear door assemblies.

[0038] In related technologies, the tailgate assembly includes a stamped steel outer tailgate panel, a stamped steel inner tailgate panel, and a stamped steel window sill reinforcement plate. In other words, the outer tailgate panel, the inner tailgate panel, and the window sill reinforcement plate are all integrally formed using a stamping process.

[0039] Specifically, the inner and outer tailgate panels have a window that runs through both of them. The window is formed during the stamping process, and the outer and inner tailgate panels are welded together. A window sill reinforcement plate is welded between the outer and inner tailgate panels and located at the lower edge of the window. This tailgate assembly is relatively heavy, which does not meet the vehicle's lightweight design requirements and is not conducive to energy conservation.

[0040] In view of this, in order to overcome the shortcomings of the related technology, the rear door assembly of this embodiment combines... Figure 1 and Figure 2 As shown, the overall design includes a rear door sheet metal body 1 and a window frame 2 that forms a window with the rear door sheet metal body 1.

[0041] It should be noted that the rear door assembly of this application specifically relates to a side-opening rear door assembly, which mainly includes a window frame 2 and a rear door sheet metal body 1. The window frame 2 and the rear door sheet metal body 1 are processed separately, and then the window frame 2 is connected to the rear door sheet metal body to form a window.

[0042] The rear door sheet metal body 1 includes an inner rear door panel 101, an outer rear door panel 102, and a window sill reinforcement plate 103 connecting the inner rear door panel 101 and the outer rear door panel 102. Both the window sill reinforcement plate 103 and the window frame 2 are made of aluminum. The window frame 2 has a cavity 20A that extends along the extension path of the window frame 2. The window frame 2 is welded to the window sill reinforcement plate 103 through longitudinal beams 202 on both sides.

[0043] like Figure 8 As shown, the window frame 2 of this application mainly includes a crossbeam 201 extending along the left-right direction of the vehicle, and longitudinal beams 202 respectively connected to both sides of the crossbeam 201. The longitudinal beams 202 on both sides extend along the up-down direction of the vehicle.

[0044] In a preferred example, the window frame 2 is first formed by extrusion, then bent, and the lower part of the longitudinal beam 202 is machined to form a structure that is easy to weld to the window sill reinforcing plate 103.

[0045] The cavity 20A extends along the extension path of the window frame 2. Specifically, both the crossbeam 201 and the longitudinal beam 202 are equipped with cavities 20A. The cavity 20A in the crossbeam 201 extends along the left-right direction of the vehicle, while the cavity 20A in the longitudinal beam 202 extends along the up-down direction of the vehicle. The connection between the crossbeam 201 and the longitudinal beam 202 is made by a rounded transition, with the cavity 20A following the rounded transition.

[0046] In a preferred example, Figure 10 The diagram shown is a structural schematic of the cross-sectional shape of beam 201. Beam 201 is a thin-walled structure. Figure 9 The lower part of the longitudinal beam 202 has a cavity 20A that conforms to the shape of the lower part of the longitudinal beam 202, while the cross-section of the upper part of the longitudinal beam 202 is consistent with the cross-section of the transverse beam 201.

[0047] In another preferred example, the cross-sectional shape of the beam 201 is as follows: Figure 11 As shown, the cross-sectional shape of the cavity 20A can be set as needed, such as rectangular, elliptical, etc., and the cross-sectional shape of the longitudinal beam 202 is consistent with the cross-sectional shape of the transverse beam 201.

[0048] It should also be noted that the window frame 2 and the window sill reinforcing plate 103 are made of aluminum material, which can be aluminum, aluminum alloy, etc. The window sill reinforcing plate 103 can be formed by casting or stamping processes, for example.

[0049] The tailgate assembly described in this application, the window frame 2 and the window sill reinforcement plate 103 are both made of aluminum material, and the window frame 2 has a cavity 20A inside, which extends along the extension path of the window frame 2, making the overall weight of the tailgate assembly lighter, meeting the lightweight design requirements of vehicles, and helping to reduce energy consumption when applied to vehicles. The longitudinal beam 202 of the window frame 2 and the window sill reinforcement plate 103 are welded together, with high connection strength, which can better ensure the structural strength and application safety and reliability of the tailgate assembly, and can better prevent the tailgate assembly from shaking and making abnormal noises during vehicle operation.

[0050] Still refer to Figure 1 and Figure 2 As shown, in some exemplary embodiments, the windowsill reinforcement plate 103 includes an inner reinforcement plate 1031 riveted to the inner panel 101 of the rear door, an outer reinforcement plate 1032 riveted to the outer panel 102 of the rear door, and a connecting plate 1033 connecting the inner reinforcement plate 1031 and the outer reinforcement plate 1032 together. The mating areas of the inner reinforcement plate 1031 and the inner panel 101 of the rear door are bonded with structural adhesive, and the mating areas of the outer reinforcement plate 1032 and the outer panel 102 of the rear door are bonded with structural adhesive.

[0051] Reference Figure 5 and Figure 6 The diagram shown is an exemplary structural schematic of the window sill reinforcement plate 103. The diagram illustrates the connection positions of some of the rivet points 103A. Generally speaking, multiple rivet points 103A are provided on the upper edge of the outer reinforcement plate 1032 and the lower edge of the inner reinforcement plate 1031. The multiple rivet points 103A on the upper and lower edges are arranged at intervals along the left and right direction of the vehicle.

[0052] In the above structure, by setting the inner panel reinforcing plate 1031, the outer panel reinforcing plate 1032 and the connecting plate 1033, an integral reinforcing structure system can be formed, and the window sill reinforcing plate 103 can be easily connected to the inner panel 101 and the outer panel 102 of the rear door respectively.

[0053] The inner panel reinforcing plate 1031, the outer panel reinforcing plate 1032, and the outer panel of the tailgate all extend along the left and right direction of the vehicle. The inner panel reinforcing plate 1031 is riveted to the inner panel of the tailgate 101, and the outer panel reinforcing plate 1032 is riveted to the outer panel of the tailgate 102. The connecting plate 1033 then connects the inner panel reinforcing plate 1031 and the outer panel reinforcing plate 1032 together. This multi-plate combination method can effectively increase the structural strength of the window sill, better withstand external loads, reduce the risk of deformation and damage in the window sill area, and improve the overall reliability and durability of the tailgate assembly.

[0054] In addition to riveting, the contact areas between the inner panel reinforcing plate 1031 and the inner rear door panel 101, and between the outer panel reinforcing plate 1032 and the outer rear door panel 102, are also bonded with structural adhesive. Structural adhesive possesses high bonding strength and good flexibility, further enhancing the strength and stability of the connection points beyond riveting. Simultaneously, it fills tiny gaps in the connection areas, making the connection tighter, reducing stress concentration, further improving the structure's fatigue resistance, and extending its service life.

[0055] Furthermore, the structural adhesive effectively prevents external dust and moisture from entering the tailgate, protecting internal components from corrosion, improving the vehicle's dustproof and waterproof performance, and maintaining a clean and dry interior environment. Simultaneously, through this window sill reinforcement plate 103 structure and the sealing effect of the structural adhesive, the path of external noise entering the vehicle through the window sill area is reduced, lowering the interior noise level and improving driving comfort. The flexibility of the structural adhesive can also absorb and attenuate some vibration energy, further reducing noise generation and propagation.

[0056] like Figure 5 As shown, in some exemplary embodiments, the connecting plate 1033 is provided with a plurality of first protrusions 1034 on both sides along the left and right direction of the vehicle. The plurality of first protrusions 1034 on each side are arranged at intervals along the left and right direction of the vehicle. Each first protrusion 1034 protrudes to one side of the connecting plate 1033 and is connected to the outer plate reinforcing plate 1032.

[0057] It should be noted that, in the left-right direction of the vehicle, multiple first protrusions 1034 are arranged on both sides of the window sill reinforcement plate 103, which can effectively improve the structural strength of the window sill reinforcement plate 103 on both sides in the left-right direction of the vehicle. It should be understood that it is also feasible to set the first protrusions 1034 on the inner plate reinforcement plate 1031 and the outer plate reinforcement plate 1032 respectively.

[0058] In one example, each connecting plate 1033 protrudes upwards, and multiple first protrusions 1034 arranged at intervals along the left and right directions of the vehicle and protruding upwards are equivalent to adding multiple reinforcing ribs to the connecting plate 1033. These ribs can increase the bending stiffness of the connecting plate 1033 in the left and right directions and perpendicular to the protrusion direction, making the connecting plate 1033 less prone to bending deformation when subjected to external forces, thus better maintaining the stability of the structure and improving the overall stiffness of the entire window sill reinforcement plate 103 system and even the rear door.

[0059] In some exemplary embodiments, the front side of the outer panel reinforcing plate 1032 is provided with a first transverse reinforcing rib 1035 and a plurality of first longitudinal reinforcing ribs 1036 along the middle of the vehicle's left-right direction. The first transverse reinforcing rib 1035 extends along the vehicle's left-right direction and connects two first protrusions 1034 near the middle. The plurality of first longitudinal reinforcing ribs 1036 are arranged at intervals along the vehicle's left-right direction, and each first longitudinal reinforcing rib 1036 is connected to the first transverse reinforcing rib 1035 and the connecting plate 1033 respectively. In this embodiment, the shape and number of the first transverse reinforcing ribs 1035 and the first longitudinal reinforcing ribs 1036 are not specifically limited.

[0060] The first transverse reinforcing rib 1035 extends along the left and right direction of the vehicle, just like a crossbeam 201 is set in the middle of the front side of the window sill reinforcing plate 103. It can effectively resist the bending deformation caused by external forces in the left and right directions during the vehicle's operation, significantly improve the bending stiffness of the outer plate reinforcing plate 1032 in the left and right directions, and make the structure of the entire window sill area more stable.

[0061] Multiple first longitudinal reinforcing ribs 1036 are arranged at intervals along the left-right direction of the vehicle and are all connected to the first transverse reinforcing ribs 1035 and the connecting plate 1033, forming a grid-like reinforcing structure. This structure is located in the middle of the window sill reinforcing plate 103 in the left-right direction of the vehicle, which can enhance the load-bearing capacity of the outer plate reinforcing plate 1032 in all directions, effectively resist the tensile or compressive stress generated when the vehicle accelerates, decelerates or is subjected to front-rear impact, and prevent the outer plate reinforcing plate 1032 from tearing or excessively deforming in the longitudinal direction.

[0062] The first transverse stiffener 1035 connects the two first protrusions 1034 near the center, further integrating the structure between the connecting plate 1033 and the outer stiffener 1032. Simultaneously, the connection between the first longitudinal stiffener 1036, the first transverse stiffener 1035, and the connecting plate 1033 forms a unified stiffening structure throughout the entire stiffening plate system. Each part cooperates and shares the load, significantly improving the overall structural strength and load-bearing capacity of the windowsill stiffener 103.

[0063] To ensure the connection strength between the window sill reinforcing plate 103 and the longitudinal beam 202, such as Figures 2 to 7 As shown, in some exemplary embodiments, each longitudinal beam 202 has a recess 2021 on the lower part of its front side. The window sill reinforcing plate 103 has a first plate 1037 partially embedded in each recess 2021, a second plate 1038 supporting each longitudinal beam 202, and a third plate 1039 that fits against the inner side of each longitudinal beam 202. The window sill reinforcing plate 103 is welded to the longitudinal beam 202 via the first plate 1037, the second plate 1038, and the third plate 1039 on the corresponding side of each longitudinal beam 202.

[0064] In the above embodiment, a first groove is provided at the lower part of the front side of the window frame 2 to provide an installation position for the first plate 1037, and the second plate 1038 can support the longitudinal beam 202. The third plate 1039 fits against the inner side of the window frame 2. Specifically, the third plate 1039 is the rearwardly bent flange 103B of the window sill reinforcing plate 103. The window sill reinforcing plate 103 is welded to the longitudinal beam 202 of the window frame 2 through the first plate 1037, the second plate 1038, and the third plate 1039, which can increase the connection area between the window sill reinforcing plate 103 and the longitudinal beam 202. In this structural form, the welding position can form a ring, which is beneficial to ensure the accuracy of the connection position, the connection strength, and the structural strength between the window sill reinforcing plate 103 and the longitudinal beam 202.

[0065] like Figure 6 and Figure 7 As shown, in some exemplary embodiments, the upper part of the first plate 1037 is provided with a flange 103B, which bends from the first plate 1037 toward the rear of the vehicle. The first plate 1037, the flange 103B and the third plate 1039 enclose a cavity 103C with an open rear side. A plurality of second reinforcing ribs 10310 are arranged in a cross pattern in the cavity 103C.

[0066] In the above embodiment, the flange 103B provided on the upper part of the first plate 1037 can increase the thickness and strength of the structure in the direction perpendicular to the first plate 1037. When the structure is subjected to a vertical load, the flange 103B can effectively resist deformation, prevent the first plate 1037 from bending or breaking due to excessive force, and improve the local load-bearing capacity.

[0067] The cavity 103C formed by the first plate 1037, the flange 103B, and the third plate 1039 creates a relatively closed structure with certain bending and torsional stiffness. Multiple intersecting second reinforcing ribs 10310 within the cavity 103C further enhance this stiffness. These intersecting ribs act like a grid-like framework within the cavity 103C, effectively dispersing and transmitting stress from different directions, making the entire structure less prone to deformation under external forces and significantly improving overall structural stiffness.

[0068] When the tailgate assembly is impacted, the flange 103B and the intersecting second reinforcing ribs 10310 work together to absorb and disperse the impact energy, reducing the damage to the internal structure. The cavity 103C structure can also buffer the impact force to a certain extent, while the reinforcing ribs can guide the direction of impact force transmission, avoid local stress concentration, thereby improving the structure's impact resistance and effectively protecting the safety of occupants and important components.

[0069] In some exemplary embodiments, near each longitudinal beam 202, the first plate 1037 and the rear tailgate outer panel 102 are connected together by a first connector 3 passing through both. In specific implementations, the first connector 3 may be, for example, an existing bolt pair. Using a bolt pair to connect the first plate 1037 and the rear tailgate outer panel 102 can effectively prevent the first plate 1037 and the rear tailgate outer panel 102 from separating due to various external forces during vehicle operation, ensuring the reliability of the connection between the two.

[0070] like Figures 1 to 4 As shown, in some exemplary embodiments, the windowsill reinforcement plate 103 has a fourth plate 10311 that fits against the hinge reinforcement plate 104. The fourth plate 10311, the hinge reinforcement plate 104, and the rear door inner panel 101 are connected together by a second connector 4 passing through them. In specific implementations, the second connector 4 is preferably a bolt pair.

[0071] It should be noted that the hinge reinforcement plate 104 is located between the inner panel 101 and the outer panel 102 of the rear door, and its structure and specific connection method still refer to relevant technologies. The fourth plate 10311 of the window sill reinforcement plate 103 is attached to the hinge reinforcement plate 104 and connected to the inner panel 101 of the rear door through the second connector 4. This effectively prevents the fourth plate 10311, the hinge reinforcement plate 104, and the inner panel 101 of the rear door from separating due to various external forces, ensuring the reliability of the connection between the three.

[0072] like Figure 6As shown, in some exemplary embodiments, the rear side of the outer panel reinforcing plate 1032 is provided with a plurality of second bosses 10312, a third transverse reinforcing rib 10313, and a plurality of third longitudinal reinforcing ribs 10314. The plurality of second bosses 10312 are arranged at intervals along the left-right direction of the vehicle and are located at the middle position of the outer panel reinforcing plate 1032 along the left-right direction of the vehicle.

[0073] The second protrusion 10312 protrudes from the outer panel reinforcing plate 1032 toward the rear of the vehicle, and the third transverse reinforcing rib 10313 extends along the left-right direction of the vehicle, connecting multiple second protrusions 10312 in sequence. Each second protrusion 10312 is provided with a third longitudinal reinforcing rib 10314, and each third longitudinal reinforcing rib 10314 extends from the corresponding second protrusion 10312 to the inner panel reinforcing plate 1031.

[0074] In the above embodiment, multiple second bosses 10312, third transverse reinforcing ribs 10313, and multiple third longitudinal reinforcing ribs 10314 are provided on the rear side of the outer plate reinforcing plate 1032, which can form a multi-directional reinforcing structure. The second bosses 10312 increase the accumulation of material in the direction perpendicular to the surface of the outer plate reinforcing plate 1032, which can improve the resistance to local dents and impact resistance of this part.

[0075] The third transverse reinforcing rib 10313 extends along the left-right direction of the vehicle, which can enhance the bending resistance of the outer panel reinforcing plate 1032 in the transverse direction, while the third longitudinal reinforcing rib 10314 improves its bending and torsional resistance in the longitudinal direction. The three work together to significantly enhance the overall structural strength of the window sill reinforcing plate 103, enabling it to better withstand various complex loads encountered during vehicle operation.

[0076] Multiple second bosses 10312 are connected sequentially by third transverse reinforcing ribs 10313, and each second boss 10312 is equipped with a third longitudinal reinforcing rib 10314 extending to the inner panel reinforcing plate 1031, forming a frame-like structure. This frame-like structure has high rigidity and stability, effectively resisting deformation caused by external forces, providing reliable support for the tailgate outer panel 102, ensuring the shape and dimensional stability of the tailgate outer panel 102, and thus improving the strength and reliability of the entire vehicle body structure.

[0077] like Figures 10 to 13 As shown, in some exemplary embodiments, the outer wall of the window frame 2 is provided with a slot 20C for installing a sealing strip 6, and the connection points of the horizontal beam 201 and the longitudinal beams 202 on both sides of the window frame 2 are provided with supporting corner joints 5. For example... Figure 12 As shown, the sealing strip 6 has a first sealing section 601 that is snapped into the slot 20C, and a second sealing section 602 that surrounds the outer periphery of the support corner 5.

[0078] It should be noted that the outer wall of the window frame 2 refers to the side wall of the window frame 2 closest to the outside of the vehicle. Specifically, the outer wall of the crossbeam 201 refers to the side wall of the crossbeam 201 facing upwards from the vehicle, the outer wall of the left longitudinal beam 202 refers to the side wall of the longitudinal beam 202 facing the left side of the vehicle, and the outer wall of the right longitudinal beam 202 refers to the side wall of the longitudinal beam 202 facing the right side of the vehicle.

[0079] In detail, the sealing strip 6 has a first sealing section 601 that is snapped onto the outer wall of the crossbeam 201 and a first sealing section 601 that is snapped onto the outer wall of the longitudinal beam 202. The first sealing section 601 on the crossbeam 201 and the first sealing section 601 on the longitudinal beam 202 are connected by a second sealing section 602. The cross-sectional shape of the sealing strip 6 is consistent along its entire length, and the sealing strip 6 is preferably formed into a single structure by an extrusion process.

[0080] In the above implementation, a slot 20C for installing the sealing strip 6 is provided on the outer wall of the window frame 2. The first sealing section 601 of the sealing strip 6 is placed in the slot 20C, which can effectively prevent external dust, rainwater, etc. from entering the vehicle from the contact surface between the window frame 2 and the sealing strip 6.

[0081] Meanwhile, the second sealing section 602 of the sealing strip 6 surrounds the outer periphery of the support corner 5, which can further enhance the sealing effect in the area where the horizontal beam 201 and the vertical beam 202 of the window frame 2 are prone to weak sealing points, ensuring the airtightness and comfort of the vehicle interior environment.

[0082] The design of the slot 20C provides a precise installation position and stable fixing method for the first sealing section 601, ensuring a tight fit between the first sealing section 601 and the outer wall of the window frame 2, reducing gaps and facilitating installation. Meanwhile, the second sealing section 602 surrounds the outer periphery of the support corner 5, allowing for adaptive fitting according to the shape of the support corner 5, filling any tiny gaps that may exist at the connection point, preventing leakage of gas, liquid, etc., and improving the reliability of the seal.

[0083] Providing support angles 5 at the connection points of the horizontal beam 201 and the two side longitudinal beams 202 of the window frame 2 enhances the strength and rigidity of these critical connection points. The support angles 5 facilitate the mating of the sealing strip 6 with the fittings, effectively disperse external forces at these points, prevent loosening or damage to the window frame 2 structure, and improve the overall structural stability of the window frame 2.

[0084] In one example, the cross-sectional shape of the sealing strip 6 is as follows: Figure 13As shown, the sealing strip 6 can be partially inserted into the two slots 20C of the window frame 2. The rear side of the window frame 2 is provided with a protrusion 20B, which extends along the extension path of the window frame 2. The window frame 2 abuts against the rear door glass 7 through the protrusion 20B, which can ensure the thickness of the adhesive 8, thereby improving the connection reliability between the window frame 2 and the rear door glass 7.

[0085] It is worth noting that, regarding the rear door assembly of this embodiment, based on the above exemplary embodiments, in specific implementation, as a preferred embodiment, it is still composed of... Figure 1 and Figure 2 As shown, it may include, for example, a rear door sheet metal body 1 and a window frame 2 that forms a window with the rear door sheet metal body 1.

[0086] The rear door sheet metal body 1 includes an inner rear door panel 101, an outer rear door panel 102, and a window sill reinforcement plate 103 connecting the inner rear door panel 101 and the outer rear door panel 102. Both the window sill reinforcement plate 103 and the window frame 2 are made of aluminum. The window frame 2 has a cavity 20A that extends along the extension path of the window frame 2. The window frame 2 is welded to the window sill reinforcement plate 103 through longitudinal beams 202 on both sides.

[0087] In the preferred embodiment of the above rear door assembly, the specific settings and arrangements of the window frame 2, the window sill reinforcement plate 103, etc. can still be referred to the descriptions in the above exemplary embodiments. Furthermore, in this preferred embodiment, the beneficial effects brought about by the design of the window frame 2, the window sill reinforcement plate 103, etc. can also be referred to the descriptions in the above exemplary embodiments.

[0088] An embodiment of the second aspect of this application provides a vehicle that has a tailgate assembly as described in the embodiment of the first aspect of this application.

[0089] In this embodiment, the vehicle utilizes the aforementioned tailgate assembly. Due to the lightweight nature of the tailgate assembly, the vehicle's weight can be significantly reduced. Furthermore, the welded connection between the window frame 2 and the window sill reinforcement plate 103 ensures the overall structural strength of the tailgate assembly. When applied to a vehicle, this enhances the safety and reliability of the vehicle's operation and reduces its energy consumption.

[0090] The above descriptions are merely some embodiments of this application and are not intended to limit this application. The technical features or structures in the foregoing different embodiments can be arbitrarily combined to form other specific technical solutions as needed. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of the claims of this application.

Claims

1. A tailgate assembly, characterized in that: It includes a rear door sheet metal body (1) and a window frame (2) that surrounds the window with the rear door sheet metal body (1). The rear door sheet metal body (1) includes a rear door inner panel (101), a rear door outer panel (102), and a window sill reinforcement plate (103) connected between the rear door inner panel (101) and the rear door outer panel (102). Both the window sill reinforcement plate (103) and the window frame (2) are made of aluminum. The window frame (2) has a cavity (20A) inside. The cavity (20A) extends along the extension path of the window frame (2). The window frame (2) is welded to the window sill reinforcement plate (103) through the longitudinal beams (202) on both sides.

2. The tailgate assembly according to claim 1, characterized in that: The window sill reinforcing plate (103) includes an inner plate reinforcing plate (1031) riveted to the inner panel (101) of the rear door, an outer plate reinforcing plate (1032) riveted to the outer panel (102) of the rear door, and a connecting plate (1033) connecting the inner plate reinforcing plate (1031) and the outer plate reinforcing plate (1032) together. The inner panel reinforcing plate (1031) and the inner panel of the rear door (101) are bonded together by structural adhesive, and the outer panel reinforcing plate (1032) and the outer panel of the rear door (102) are bonded together by structural adhesive.

3. The tailgate assembly according to claim 2, characterized in that: The connecting plate (1033) is provided with multiple first protrusions (1034) on both sides along the left and right direction of the vehicle, and the multiple first protrusions (1034) on each side are arranged at intervals along the left and right direction of the vehicle. Each of the first bosses (1034) protrudes to one side of the connecting plate (1033) and is connected to the outer plate reinforcing plate (1032).

4. The tailgate assembly according to claim 3, characterized in that: The outer panel reinforcing plate (1032) has a first transverse reinforcing rib (1035) and multiple first longitudinal reinforcing ribs (1036) at the middle of the front side along the left-right direction of the vehicle. The first transverse reinforcing rib (1035) extends along the left-right direction of the vehicle and connects the two first bosses (1034) near the middle. Multiple first longitudinal stiffeners (1036) are arranged at intervals along the left and right directions of the vehicle, and each first longitudinal stiffener (1036) is connected to the first transverse stiffener (1035) and the connecting plate (1033) respectively.

5. The tailgate assembly according to claim 2, characterized in that: Each of the longitudinal beams (202) has a recess (2021) at the lower part of its front side. The window sill reinforcing plate (103) has a first plate (1037) partially embedded in each of the recesses (2021), a second plate (1038) supporting each of the longitudinal beams (202), and a third plate (1039) that fits against the inner side of each of the longitudinal beams (202). The window sill reinforcing plate (103) is welded to the longitudinal beam (202) via the first plate (1037), the second plate (1038) and the third plate (1039) on the corresponding side of each longitudinal beam (202).

6. The tailgate assembly according to claim 5, characterized in that: The upper part of the first plate (1037) is provided with a flange (103B). The first plate (1037), the flange (103B) and the third plate (1039) form a cavity (103C) with an open rear side. The cavity (103C) is provided with a plurality of cross-arranged second reinforcing ribs (10310).

7. The tailgate assembly according to claim 5, characterized in that: Proximity to each of the longitudinal beams (202), the first plate (1037) and the rear door outer panel (102) are connected together by a first connector (3) passing through both; and / or, The window sill reinforcement plate (103) has a fourth plate (10311) that fits into the hinge reinforcement plate (104). The fourth plate (10311), the hinge reinforcement plate (104), and the rear door inner panel (101) are connected together by a second connector (4) passing through the three.

8. The tailgate assembly according to claim 2, characterized in that: The outer plate reinforcing plate (1032) is provided with a plurality of second protrusions (10312), a third transverse reinforcing rib (10313) and a plurality of third longitudinal reinforcing ribs (10314) on the rear side. Multiple second bosses (10312) are arranged at intervals along the left-right direction of the vehicle and are located at the middle position of the outer plate reinforcing plate (1032) along the left-right direction of the vehicle. The third transverse reinforcing rib (10313) extends along the left and right direction of the vehicle and connects the multiple second bosses (10312) in sequence; each of the second bosses (10312) is provided with the third longitudinal reinforcing rib (10314), and each of the third longitudinal reinforcing ribs (10314) extends from the corresponding second boss (10312) to the inner plate reinforcing plate (1031).

9. The tailgate assembly according to any one of claims 1 to 8, characterized in that: The outer wall of the window frame (2) is provided with a slot (20C) for installing a sealing strip (6), and the connection parts of the horizontal beam (201) and the longitudinal beams (202) on both sides of the window frame (2) are provided with supporting corner brackets (5). The sealing strip (6) has a first sealing section (601) that is engaged in the slot (20C) and a second sealing section (602) that surrounds the outer periphery of the support corner (5).

10. A vehicle, characterized in that: The vehicle is equipped with a tailgate assembly as described in any one of claims 1 to 9.

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