Rear door assembly and vehicle

Abstract

This application relates to the field of vehicle body technology and provides a tailgate assembly and a vehicle. The tailgate assembly includes a tailgate sheet metal component and a window frame. The tailgate sheet metal component includes an inner tailgate panel and an outer tailgate panel that enclose a cavity, and a tailgate reinforcing beam connecting the inner and outer tailgate panels. The tailgate reinforcing beam is made of aluminum and is positioned at the upper opening of the cavity. The window frame includes two longitudinal beams and a crossbeam connecting the two longitudinal beams. The window frame is made of extruded aluminum and is connected to the tailgate reinforcing beam via the longitudinal beams on both sides. The tailgate assembly of this application utilizes the tailgate reinforcing beam to form the window frame and the tailgate sheet metal component into a single unit, which improves the connection strength between the window frame and the tailgate sheet metal component, ensures the structural stability of the tailgate assembly, and reduces problems such as shaking and abnormal noise. Furthermore, the use of aluminum for both the tailgate reinforcing beam and the window frame facilitates the lightweight design of the tailgate assembly.

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 equipped with the aforementioned tailgate assembly. Background Technology

[0002] In the vehicle body structure, the tailgate assembly is an important opening and closing component at the rear of the vehicle. It is connected to the sheet metal at the rear of the vehicle body through hinges and locking mechanisms. It not only provides a passage for storing and retrieving luggage, but also integrates a variety of functional components such as the rear windshield (i.e., tailgate glass), rear wiper, and rear camera. It is an important carrier of the vehicle's appearance, function, and safety.

[0003] A conventional tailgate assembly typically consists of an inner tailgate panel and an outer tailgate panel. Both the inner and outer panels are made of steel and are welded together. Both panels have stamped windows, which are then framed around their perimeter. While this structure meets basic strength and rigidity requirements due to the use of steel for both panels, it results in a relatively heavy weight, hindering the achievement of overall vehicle weight reduction goals. Utility Model Content

[0004] In view of this, this application aims to provide a rear door assembly that is lightweight and has high connection strength.

[0005] To achieve the above objectives, the technical solution of this application is implemented as follows: A tailgate assembly includes a tailgate sheet metal assembly and a window frame that forms a window with the tailgate sheet metal assembly; The tailgate sheet metal assembly includes an inner tailgate panel and an outer tailgate panel that form a cavity, and a tailgate reinforcing beam connected between the inner tailgate panel and the outer tailgate panel. The tailgate reinforcing beam is made of aluminum and is positioned at the upper opening of the cavity. The window frame includes longitudinal beams located in the left-right direction of the vehicle and a crossbeam connecting the two longitudinal beams. The window frame is made of extruded aluminum and is connected to the rear door reinforcing beam through the longitudinal beams on both sides.

[0006] Furthermore, the rear door reinforcing beam is formed with a fitting part that fits and connects to the lower part of the longitudinal beam, and the periphery of the fitting part is welded to the longitudinal beam.

[0007] Furthermore, the lower part of the front side of the window frame is provided with a first groove, and the fitting part includes a panel embedded in the first groove, a support plate supporting the longitudinal beam, and a fitting plate fitting against the inner side of the window frame; the rear door reinforcing beam is welded to the longitudinal beam through the panel, the support plate and the fitting plate.

[0008] Furthermore, the connecting parts of each of the longitudinal beams and the rear door reinforcing beams are covered with decorative panels on the side facing the front of the vehicle; each of the decorative panels has a first sealing surface facing the front of the vehicle, and the first sealing surface, the front side of the window frame, and the second sealing surface on the inner panel of the rear door are coplanar and are all used to press against the door frame sealing strip at the rear of the vehicle body.

[0009] Furthermore, the decorative panel covers the front side of the panel and has a first overlapping portion that overlaps the longitudinal beam and a second overlapping portion that overlaps the inner panel of the tailgate; the side of the first overlapping portion facing the front of the vehicle constitutes the upper part of the first sealing surface, and the side of the second overlapping portion facing the front of the vehicle constitutes the lower part of the first sealing surface.

[0010] Furthermore, the area near the fitting portion of the rear door reinforcing beam is provided with a first protrusion, the first protrusion protruding towards the rear side of the vehicle, and the rear door outer panel is detachably connected to the first protrusion by a first fastener; and / or, the lower part of the rear side of the longitudinal beam is provided with a third groove, the rear door outer panel has an embedded portion that is embedded in the third groove, and the rear door outer panel is bonded to the longitudinal beam through the embedded portion.

[0011] Furthermore, the tailgate reinforcing beam has a first reinforcing plate attached to the outer side of the inner tailgate panel and a second reinforcing plate attached to the inner side of the outer tailgate panel; the tailgate reinforcing beam is riveted to the inner tailgate panel via the first reinforcing plate and to the outer tailgate panel via the second reinforcing plate.

[0012] Furthermore, the cavity is provided with an outer panel support plate, the upper part of which is sandwiched between the rear door outer panel and the second reinforcing plate; the outer panel support plate has a second protrusion protruding towards the front of the vehicle, and the first reinforcing plate has a third protrusion protruding towards the rear of the vehicle, and the second protrusion and the third protrusion are detachably connected by a second fastener.

[0013] Furthermore, the cavity is provided with a door lock mounting plate, which includes a first folding plate and a second folding plate connected together. The first folding plate is welded to the side wall of the inner panel of the rear door, and the second folding plate is welded to the main body of the inner panel of the rear door.

[0014] Compared with related technologies, this application has the following advantages: (1) The rear door assembly described in this application uses a window frame made of extruded aluminum, which can improve the structural strength of the window frame, improve the dimensional accuracy of the window frame, and increase the productivity and material utilization rate during the production of the window frame. Furthermore, the longitudinal beams on both sides of the window frame are welded to the aluminum rear door reinforcing beam. The window frame and the rear door reinforcing beam are both made of aluminum, which can make the window frame and the rear door reinforcing beam firmly connected together, and also facilitates the lightweight design of the rear door assembly. At the same time, the rear door reinforcing beam is connected between the inner panel and the outer panel of the rear door. Thus, the window frame and the rear door sheet metal assembly are formed into a whole by using the rear door reinforcing beam, which can improve the connection strength between the window frame and the rear door sheet metal assembly, thereby helping to ensure the structural stability of the rear door assembly and preventing the window frame from shaking and making abnormal noises during vehicle operation.

[0015] (2) A fitting part is formed on the rear door reinforcing beam and connected to the lower part of the longitudinal beam, and the periphery of the fitting part is welded to the longitudinal beam. This can increase the connection contact area between the rear door reinforcing beam and the longitudinal beam, improve the connection strength between the rear door reinforcing beam and the longitudinal beam, and also avoid stress concentration caused by local point connection. At the same time, the fitting connection can also improve the sealing of the connection part.

[0016] (3) A first groove is provided at the lower part of the front side of the window frame to provide an installation position for the inlay plate of the fitting part, and the support plate of the fitting part can support the longitudinal beam. The fitting plate of the fitting part is fitted with the inner side of the window frame. The rear door reinforcing beam is welded to the longitudinal beam of the window frame through the inlay plate, support plate and fitting plate. This structural form is conducive to ensuring the accuracy of the connection position, connection strength and structural strength between the rear door reinforcing beam and the longitudinal beam.

[0017] (4) Cover the connection between the longitudinal beam and the rear door reinforcement beam with a decorative panel so that the first sealing surface of the decorative panel, the front side of the window frame and the second sealing surface of the rear door inner panel are set together. This can better press against the door frame sealing strip on the vehicle body, thereby improving the sealing performance of the vehicle and effectively reducing the risk of water leakage at the rear door, thus helping to improve the quality of the vehicle.

[0018] (5) The decorative edge panel covers the front side of the panel, which can cover the weld marks at the connection position between the longitudinal beam and the rear door reinforcement beam, as well as part of the connection position between the rear door reinforcement beam and the rear door inner panel, which helps to improve the appearance of the rear door assembly; and the first overlapping part and the second overlapping part respectively form the upper and lower parts of the first sealing surface, which helps to make the first sealing surface coplanar with the front side of the window frame.

[0019] (6) The first protrusion provides a stable support point for the installation of the tailgate outer panel, and the detachable connection method facilitates the subsequent maintenance and replacement of the tailgate outer panel. At the same time, the fastener connection can ensure the strength of the connection and prevent the tailgate outer panel from loosening during use. The third groove provided on the lower rear side of the longitudinal beam allows the embedded part of the tailgate outer panel to be embedded in the third groove, and the embedded part is bonded to the longitudinal beam. This structure, by using the embedded part and the third groove to fit together, can achieve precise positioning and tight fit between the longitudinal beam and the tailgate outer panel. In addition, the bonding method can not only enhance the sealing of the connection between the two, preventing rainwater and other impurities from entering, but also improve the structural stability of the tailgate assembly and reduce vibration and abnormal noise during vehicle operation.

[0020] (7) The first and second reinforcing plates are installed on the rear door reinforcing beam and are riveted to the inner and outer rear door panels respectively, which facilitates the connection of parts of different materials and ensures sufficient connection strength.

[0021] (8) The outer panel support plate installed in the cavity is sandwiched between the outer panel of the rear door and the second reinforcing plate, which can effectively support the outer panel of the rear door and prevent the outer panel of the rear door from denting or deforming during use due to insufficient rigidity, thus ensuring the appearance and structural performance of the outer panel of the rear door. Furthermore, the outer panel support plate and the first reinforcing plate of the rear door reinforcing beam are detachably connected through the second and third protrusions, which can improve the overall structural lightness and deformation resistance of the rear door assembly. When the rear door is subjected to external force, it is conducive to the dispersion and transmission of external force. At the same time, the detachable connection also facilitates subsequent maintenance and component replacement.

[0022] (9) A door lock mounting plate is installed in the cavity, and the first folding plate of the door lock mounting plate is welded to the side wall of the inner panel of the rear door, and the second folding plate of the door lock mounting plate is welded to the main body of the inner panel of the rear door. This not only improves the structural strength of the rear door assembly, but also provides a stable mounting base for the door lock.

[0023] Another object of this application is to provide a vehicle having a tailgate assembly as described above.

[0024] The vehicle described in this application, by adopting the above-mentioned tailgate assembly, uses an aluminum tailgate reinforcing beam to form an integral whole with the aluminum window frame and the tailgate sheet metal assembly. This can improve the connection strength between the window frame and the tailgate sheet metal assembly, ensure the structural stability of the tailgate assembly, prevent the window frame from shaking and making abnormal noises during vehicle operation, and also facilitate the lightweight design of the tailgate assembly, thereby improving the quality of the vehicle. Attached Figure Description

[0025] 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 a first-view structural schematic diagram of the rear tailgate assembly (left side) described in an embodiment of this application; Figure 2 This is a second-view structural schematic diagram of the rear tailgate assembly (left side) described in an embodiment of this application; Figure 3 This is a third-view structural schematic diagram of the rear tailgate assembly (left side) described in an embodiment of this application; Figure 4 This is a fourth-view structural schematic diagram of the rear tailgate assembly (left side) described in an embodiment of this application; Figure 5 This is a partial structural diagram of the tailgate assembly without the outer tailgate panel installed, as described in the embodiments of this application. Figure 6 This is a schematic diagram of the bonding portion described in an embodiment of this application; Figure 7 This is a first-view structural diagram showing the cooperation between the decorative panel, the inner panel of the rear door, and the window frame as described in the embodiment of this application. Figure 8 This is a structural schematic diagram from a second perspective showing the cooperation between the decorative panel, the inner panel of the rear door, and the window frame as described in the embodiment of this application. Figure 9 for Figure 8 Sectional view from the AA direction; Figure 10 for Figure 8 Sectional view from the BB direction; Figure 11 This is a schematic diagram of the front side of the longitudinal beam as described in the embodiment of this application; Figure 12 This is a schematic diagram of the structure of the rear side of the longitudinal beam described in the embodiment of this application; Figure 13 This is a schematic diagram of the structure of the door lock mounting plate described in an embodiment of this application; Explanation of reference numerals in the attached figures: 1. Rear door sheet metal components; 2. Window frame; 3. Decorative panel; 11. Rear door inner panel; 12. Rear door outer panel; 13. Rear door reinforcing beam; 14. Outer panel support plate; 15. Door lock mounting plate; 11a. Inner panel body; 11b. First flange; 11c. Second flange; 111. Second sealing surface; 112. Second groove; 121. Embedded part; 130. Fitting part; 1301. Panel; 1302. Support plate; 1303. Fitting plate; 131. First protrusion; 132. Reinforcing column; 133. Reinforcing rib; 134. First reinforcing plate; 135. Second reinforcing plate; 1340. Third protrusion; 140. Second protrusion; 151. First folding plate; 152. Second folding plate; 20a. Longitudinal beam; 21. Front side; 22. Rear side; 23. Inner side; 201. First groove; 202. Third groove; 301. First overlapping part; 302. Second overlapping part; 303. First sealing surface; 10. First fastener; 20. Second fastener. Detailed Implementation

[0026] 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.

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] In the attached diagram: the arrows point forward to the front of the vehicle, backward to the rear, upward to the top, and downward to the bottom. When sitting in the driver's seat facing the front of the vehicle, the left side is where your left hand is, and the right side is where your right hand is. In the diagram, the left arrow points to the left side of the vehicle, and the right arrow points to the right side.

[0034] The terms "inner" and "outer" are relative. "Inner" refers to the interior space of the vehicle, while "outer" refers to the exterior of the vehicle, that is, the location away from the interior space.

[0035] An embodiment of the first aspect of this application provides a rear door assembly that is lightweight, has high connection strength, and by optimizing its own structure, it can also improve the connection strength at the window frame, which helps to improve problems such as shaking and abnormal noise at the rear door.

[0036] In related technologies, a conventional tailgate assembly typically includes an inner tailgate panel and an outer tailgate panel. Both the inner and outer tailgate panels are made of steel and are welded together. Both panels have stamped windows, which are surrounded by window frames.

[0037] However, this structural form, since both the inner and outer tailgate panels are made of steel, can meet the basic strength and rigidity requirements, but it is relatively heavy, which is not conducive to achieving the goal of lightweighting the whole vehicle.

[0038] In the structure of a tailgate, because both the inner and outer panels are formed into a single piece using a stamping process, this type of tailgate assembly is generally referred to as a one-piece tailgate assembly. For one-piece tailgate assemblies, since both the inner and outer panels are made of steel, the overall weight of the assembly is relatively heavy. With the increasing demand for weight reduction and cost reduction, split tailgate designs have emerged.

[0039] A split-type tailgate consists of a "∩"-shaped window frame and a roughly square tailgate sheet metal assembly. The tailgate window frame and the tailgate sheet metal assembly are connected together to form the window for installing glass. Because the tailgate window frame and the tailgate sheet metal assembly are manufactured separately, this type of tailgate is called a split-type tailgate.

[0040] In the structure of a split tailgate, since both the tailgate sheet metal components and the tailgate window frame are made of metal, the connection strength between the tailgate window frame and the tailgate sheet metal components is relatively weak. This leads to problems such as shaking and abnormal noise of the tailgate window frame during vehicle operation.

[0041] In view of this, in order to overcome the shortcomings of the related technology, the rear door assembly of this embodiment combines... Figures 1 to 13 As shown, the overall design includes a rear door sheet metal assembly 1 and a window frame 2 that forms a window together with the rear door sheet metal assembly 1.

[0042] The rear door sheet metal assembly 1 includes an inner rear door panel 11 and an outer rear door panel 12 that form a cavity, and a rear door reinforcing beam 13 that connects the inner rear door panel 11 and the outer rear door panel 12. The rear door reinforcing beam 13 is made of aluminum and is placed at the upper opening of the cavity.

[0043] The window frame 2 is shaped like a "∩" and includes two longitudinal beams 20a located in the left-right direction of the vehicle, as well as a crossbeam connecting the two longitudinal beams 20a. The weight extends along the vertical direction of the vehicle, while the crossbeam extends along the left-right direction. The window frame 2 is made of extruded aluminum and is welded to the rear door reinforcing beam 13 via the longitudinal beams 20a on both sides.

[0044] In the above structure, by using a window frame 2 made of extruded aluminum, the structural strength and dimensional accuracy of the window frame 2 can be significantly improved. The production efficiency and material utilization rate of the window frame 2 are also high. Furthermore, the longitudinal beams 20a on both sides of the window frame 2 are welded to the aluminum rear door reinforcing beam 13. Since both the window frame 2 and the rear door reinforcing beam 13 are made of aluminum, this ensures a secure connection between them and also facilitates a lightweight design for the rear door assembly.

[0045] At the same time, the rear door reinforcing beam 13 is connected between the rear door inner panel 11 and the rear door outer panel 12. Thus, the rear door reinforcing beam 13 forms the window frame 2 and the rear door sheet metal assembly 1 into a whole, which can improve the connection strength between the window frame 2 and the rear door sheet metal assembly 1, thereby helping to ensure the structural stability of the rear door assembly and prevent the window frame 2 from shaking or making abnormal noises during vehicle operation.

[0046] It should be noted that the tailgate assembly in this embodiment is a split tailgate, and the structures on the left and right sides of the tailgate assembly are symmetrical along the left-right direction of the vehicle. To clearly understand the structure of the tailgate assembly, Figures 1 to 13 The structures shown are all on the left side of the rear door assembly, that is, the structure of the left longitudinal beam 20a of the window frame 2 and the connection part of the rear door sheet metal assembly 1.

[0047] Because the structure of the tailgate assembly is symmetrical on both sides, the following text will refer to... Figures 1 to 9 The rear tailgate assembly of this embodiment will be described using the left side structure of the rear tailgate assembly as an example.

[0048] Specifically, combined Figures 1 to 9 As shown, the tailgate assembly of this embodiment includes a tailgate sheet metal component 1 and a window frame 2, with the tailgate sheet metal component 1 and the window frame 2 forming a window. The tailgate sheet metal component 1 includes a tailgate inner panel 11, a tailgate outer panel 12, and a tailgate reinforcing beam 13. A cavity is formed between the tailgate inner panel 11 and the tailgate outer panel 12. The tailgate reinforcing beam 13 connects the tailgate inner panel 11 and the tailgate outer panel 12 and blocks the upper opening of the cavity. The tailgate reinforcing beam 13 is made of aluminum.

[0049] The window frame 2 is a solid structure made of extruded aluminum, which maximizes its rigidity, strength, and resistance to deformation. The window frame 2 is shaped like a "∩" and has two longitudinal beams 20a located in the left-right direction of the vehicle, as well as a crossbeam connecting the two longitudinal beams 20a. Furthermore, the window frame 2 is welded to the rear door reinforcing beam 13 via the longitudinal beams 20a on both sides.

[0050] At this point, both the window frame 2 and the rear door reinforcing beam 13 are made of aluminum and are connected by welding. This makes the window frame 2 and the rear door reinforcing beam 13 firmly connected together, and also helps to reduce the weight of the rear door assembly.

[0051] Reference Figure 2 and Figure 6As shown, in some exemplary embodiments, for example, a fitting portion 130 is formed on the rear door reinforcing beam 13 to fit and connect with the lower part of the longitudinal beam 20a, and the periphery of the fitting portion 130 is welded to the longitudinal beam 20a. This arrangement increases the contact area between the rear door reinforcing beam 13 and the longitudinal beam 20a, improves the connection strength between them, avoids stress concentration caused by localized point connections, and also enhances the sealing of the connection area.

[0052] Reference Figure 6 and Figure 11 As shown, in some exemplary embodiments, a first groove 201 is provided at the lower part of the front side 21 of the window frame 2, that is, a first groove 201 is provided at the lower part of the front side 21 of the longitudinal beam 20a. The aforementioned fitting part 130 includes, for example, a panel 1301 embedded in the first groove 201, a support plate 1302 supporting the longitudinal beam 20a, and a fitting plate 1303 fitting against the inner side 23 of the window frame 2. The rear door reinforcing beam 13 is welded to the longitudinal beam 20a through the panel 1301, the support plate 1302, and the fitting plate 1303.

[0053] In terms of specific structure, such as Figure 6 As shown, the rear door reinforcing beam 13 includes a reinforcing beam body, with a panel 1301 formed at the edge of the reinforcing beam body and extending in a direction pointing outwards from the vehicle. The reinforcing beam body has a flange extending towards the rear of the vehicle, which constitutes the aforementioned bonding panel 1303. A support plate 1302 is connected to both the panel 1301 and the bonding panel 1303, and the support plate 1302, panel 1301, and bonding panel 1303 are connected in pairs. The first groove 201 on the front side of the longitudinal beam 20a is fitted with the panel 1301, the inner surface 23 of the longitudinal beam 20a is fitted with the bonding panel 1303, and the bottom end of the longitudinal beam 20a is supported on the support plate 1302. In a specific implementation, the welding mark m forms a ring along the edge of the panel 1301, the edge of the bonding panel 1303, and the edge of the support plate 1302.

[0054] In the above embodiment, by providing a first groove 201 at the lower part of the front side 21 of the window frame 2, an installation position can be provided for the panel 1301 of the fitting part 130, and the support plate 1302 of the fitting part 130 can support the longitudinal beam 20a. The fitting plate 1303 of the fitting part 130 is fitted with the inner side 23 of the window frame 2. The rear door reinforcing beam 13 is welded to the longitudinal beam 20a of the window frame 2 through the panel 1301, the support plate 1302 and the fitting plate 1303. This structural form is conducive to ensuring the accuracy of the connection position, the connection strength and the structural strength between the rear door reinforcing beam 13 and the longitudinal beam 20a.

[0055] To further improve the structural strength of the connection between the window frame 2 and the rear door reinforcing beam 13, in this embodiment, as an exemplary structure, a reinforcing part is provided on the main body of the reinforcing beam near the connection position. This reinforcing part includes, for example, a reinforcing column 132 and a reinforcing rib 133. Multiple reinforcing columns 132 and reinforcing ribs 133 are provided, and one end of the reinforcing column 132 is connected to the reinforcing rib 133. This can effectively improve the structural strength at this position.

[0056] Reference Figures 7 to 10 As shown, in some exemplary embodiments, the connection points of each longitudinal beam 20a and the rear tailgate reinforcing beam 13 are covered with a decorative panel 3 on the side facing forward of the vehicle. The decorative panel 3 is integrally molded using an injection molding process, and its material is plastic, which facilitates the molding of a structure that is compatible with the longitudinal beam 20a and the rear tailgate sheet metal assembly 1 during processing.

[0057] Reference Figure 7 and Figure 8 As shown, for example, each decorative panel 3 has a first sealing surface 303 facing the front of the vehicle. The first sealing surface 303, the front side 21 of the window frame 2, and the second sealing surface 111 on the inner panel 11 of the rear door are coplanar and are all used to press against the door frame sealing strip at the rear of the vehicle body.

[0058] In the above implementation, by covering the connection between the longitudinal beam 20a and the rear door reinforcing beam 13 with a decorative panel 3, the first sealing surface 303 on the decorative panel 3, the front side 21 of the window frame 2, and the second sealing surface 111 on the inner panel 11 of the rear door are set together. This can better press against the door frame sealing strip on the vehicle body, thereby improving the sealing performance of the vehicle, effectively reducing the risk of water leakage at the rear door, and thus helping to improve the quality of the vehicle.

[0059] In this embodiment, looking back Figure 2 As shown, the inner rear door panel 11 structurally includes an inner panel body 11a, a first flange 11b folded backward from the inner panel body 11a along the front-rear direction of the vehicle, and a second flange 11c folded outward from the first flange 11b along the left-right direction of the vehicle. The second sealing surface 111 is formed on the second flange 11c, while the first flange 11b constitutes the sidewall of the inner rear door panel 11 described below.

[0060] The aforementioned second sealing surface 111 is specifically formed on the inner panel 11 of the rear door. It should be understood that the sealing surface on the rear door sheet metal assembly 1 is referred to as the second sealing surface 111 here, simply for the convenience of distinguishing it from the first sealing surface 303 on the decorative panel 3.

[0061] In detail, refer to Figure 7 and Figure 8 and combined Figure 11As shown, the decorative panel 3 covers the front side of the panel 1301, which can cover the weld m at the connection position of the longitudinal beam 20a and the rear door reinforcing beam 13, as well as part of the connection position between the rear door reinforcing beam 13 and the rear door inner panel 11, thereby enhancing the appearance and refinement of the rear door assembly.

[0062] Furthermore, the trim panel 3 has a first overlapping portion 301 that overlaps the longitudinal beam 20a, and a second overlapping portion 302 that overlaps the inner panel 11 of the tailgate. Preferably, the first overlapping portion 301 is fitted into the first groove 201, and the side of the first overlapping portion 301 facing forward of the vehicle forms the upper part of the first sealing surface 303. The second overlapping portion 302 is fitted into the second groove 112 on the inner panel 11 of the tailgate, and the side of the second overlapping portion 302 facing forward of the vehicle forms the lower part of the first sealing surface 303.

[0063] It is worth noting that the first overlapping portion 301 of the decorative panel 3 must match the size and shape of the first groove 201. This ensures that the first overlapping portion 301 is better fitted into the first groove 201 and better guarantees the coplanarity of the first sealing surface 303 and the front side 21 of the window frame 2. The second overlapping portion 302 of the decorative panel 3 must also match the size and shape of the second groove 112. This ensures that the second overlapping portion 302 is better fitted into the second groove 112 and better guarantees the coplanarity of the first sealing surface 303 and the second sealing surface 111 on the inner panel 11 of the rear door.

[0064] In the above implementation, the first overlapping portion 301 and the second overlapping portion 302 are configured such that the first overlapping portion 301 overlaps with the longitudinal beam 20a, thereby connecting the decorative panel 3 and the longitudinal beam 20a, improving the assembly stability between the two, and ensuring the smoothness of the connection between the first sealing surface 303 and the front side 21 of the window frame 2. The second overlapping portion 302 overlaps with the inner panel 11 of the rear door, so that the decorative panel 3 is simultaneously fixed to the inner panel 11 of the rear door, ensuring the overall assembly firmness, and also ensuring the smoothness of the connection between the first sealing surface 303 and the second sealing surface 111.

[0065] To further improve sealing performance, in some of the exemplary embodiments, reference continues to be made to... Figure 7 and Figure 8 As shown, along the left-right direction of the vehicle from the inside to the outside, the upper end of the first overlapping portion 301 slopes downwards. Figure 8 As shown, arrow a indicates the upper end of the first overlapping portion 301. Figure 8 In the middle, the left side of the first overlapping part 301 is the side closer to the outside of the vehicle, and the right side of the first overlapping part 301 is the side closer to the inside of the vehicle.

[0066] In this exemplary embodiment, the upper end of the first overlapping portion 301 is inclined downward along the left-right direction of the vehicle from the inside side to the outside side. When rainwater flows to the connection between the first sealing surface 303 and the front side 21, the first overlapping portion 301 will guide the water flow to the outside side of the vehicle. This can effectively prevent water from flowing into the vehicle through the tiny seams of the connection, which can better reduce the risk of rainwater entering the vehicle and further ensure the sealing performance of the tailgate assembly.

[0067] Still refer to Figure 7 and Figure 8 As shown, in some exemplary embodiments, the lower end of the second overlapping portion 302 slopes downward along the left-right direction of the vehicle from the inside side to the outside side. Figure 8 In the diagram, the position indicated by arrow b is the lower end of the second overlapping part 302.

[0068] In this implementation, the direction is from the inside of the vehicle to the outside along the left-right direction of the entire vehicle, that is... Figure 8 As shown, from right to left, the lower end of the second overlapping portion 302 slopes downward. When rainwater flows to the connection between the first sealing surface 303 and the second sealing surface 111, the lower part of the second overlapping portion 302 will guide the water flow to the outside of the vehicle. This can effectively prevent water from flowing into the vehicle through the tiny seams at the connection, thus reducing the risk of rainwater entering the vehicle and further ensuring the sealing performance of the tailgate assembly.

[0069] In this embodiment, the inner tailgate panel 11 and the outer tailgate panel 12 are made of steel, and can be formed, for example, by stamping. It should be noted that the inner tailgate panel 11 and the outer tailgate panel 12, as the outer and inner skeleton of the tailgate, are made of steel to effectively withstand the impact force of opening and closing the door, the vibration load during vehicle operation, and the protection requirements during external collisions, ensuring the structural stability of the tailgate assembly.

[0070] When the inner rear door panel 11 and the outer rear door panel 12 are connected, for example, an edge banding is provided on the outer rear door panel 12 to wrap the edge of the inner rear door panel 11, and then the edge banding is welded to the inner rear door panel 11 together.

[0071] Since the inner tailgate panel 11 and outer tailgate panel 12 are still made of steel, while the tailgate reinforcing beam 13 and window frame 2 are made of aluminum, due to the limitations of the parts materials, the inner tailgate panel 11 and outer tailgate panel 12 cannot be directly welded to the tailgate reinforcing beam 13 and the window frame 2, respectively. Therefore, in one preferred embodiment, the area of ​​the tailgate reinforcing beam 13 near the fitting portion 130 is provided with a first protrusion 131, the first protrusion 131 protruding towards the rear of the vehicle, and the tailgate outer panel 12 is detachably connected to the first protrusion 131 by a first fastener 10.

[0072] At this time, the first protrusion 131 provides a stable support point for the installation of the tailgate outer panel 12, and the detachable connection method facilitates the subsequent maintenance and replacement of the tailgate outer panel 12. At the same time, the connection of the first fastener 10 can ensure the strength of the connection and prevent the tailgate outer panel 12 from loosening during use.

[0073] In specific implementation, the first fastener 10 mentioned above is, for example, a bolt or screw, and the top of the first protrusion 131 is provided with a threaded hole. The first fastener 10 can be screwed into the threaded hole by passing through the through hole on the rear tailgate outer panel 12, so that the rear tailgate outer panel 12 and the rear tailgate reinforcing beam 13 are screwed together. The screwed connection method not only ensures the connection strength between the rear tailgate outer panel 12 and the rear tailgate reinforcing beam 13, but also facilitates the disassembly between the rear tailgate outer panel 12 and the rear tailgate reinforcing beam 13.

[0074] Similarly, as one preferred implementation, combined with Figure 1 , Figure 3 and Figure 12 As shown, for example, a third groove 202 is provided on the lower part of the rear side 22 of the longitudinal beam 20a, and the outer panel 12 of the rear door has an embedded part 121 embedded in the third groove 202. The outer panel 12 of the rear door is bonded to the longitudinal beam 20a through the embedded part 121.

[0075] This structural form, by using the embedded part 121 and the third groove 202 to fit together, can achieve precise positioning and tight fit between the longitudinal beam 20a and the outer panel 12 of the tailgate. Furthermore, by using the adhesive connection method, it can not only enhance the sealing of the connection between the two and prevent rainwater and other impurities from entering, but also improve the structural stability of the tailgate assembly and reduce vibration and abnormal noise during vehicle operation.

[0076] In addition, combined Figure 3 and Figure 4As shown, in some exemplary embodiments, for example, the tailgate reinforcing beam 13 has a first reinforcing plate 134 attached to the outer side of the inner tailgate panel 11 and a second reinforcing plate 135 attached to the inner side of the outer tailgate panel 12. The tailgate reinforcing beam 13 is riveted to the inner tailgate panel 11 via the first reinforcing plate 134, and the tailgate reinforcing beam 13 is riveted to the outer tailgate panel 12 via the second reinforcing plate 135.

[0077] In the above embodiment, a first reinforcing plate 134 and a second reinforcing plate 135 are provided on the rear door reinforcing beam 13, and are riveted to the rear door inner panel 11 and the rear door outer panel 12 respectively by means of the first reinforcing plate 134 and the second reinforcing plate 135. This not only increases the connection contact area between the rear door reinforcing beam 13 and the rear door inner panel 11 and the rear door outer panel 12, but also, by means of the high connection strength and strong vibration resistance of the riveting connection method, it is possible to connect parts of different materials and ensure sufficient connection strength.

[0078] It is worth noting that, based on the fact that both the rear door reinforcing beam 13 and the window frame 2 are made of aluminum and are welded together, the inner rear door panel 11 is riveted to the first reinforcing plate 134 of the rear door reinforcing beam 13, and the outer rear door panel 12 is riveted to the second reinforcing plate 135 of the rear door reinforcing beam 13. Simultaneously, the outer rear door panel 12 is screwed to the first protrusion 131 on the rear door reinforcing beam 13 via a first fastener 10, and the embedded portion 121 of the outer rear door panel 12 is bonded to the third groove 202 on the rear side 22 of the longitudinal beam 20a. This combination of riveting, bonding, and screwing ensures the connection strength between the window frame 2 and the rear door sheet metal assembly 1, thereby guaranteeing the structural strength of the rear door assembly.

[0079] It is also worth noting that the riveting mentioned in this embodiment specifically adopts SPR (Self-Piercing Riveting), which is a mechanical connection technology that does not require pre-drilling.

[0080] Combination Figures 3 to 6 As shown, in some exemplary embodiments, an outer panel support plate 14 is further provided within the cavity, with the upper part of the outer panel support plate 14 sandwiched between the rear door outer panel 12 and the second reinforcing plate 135. The provided outer support plate 1302 can effectively support the rear door outer panel 12, preventing the rear door outer panel 12 from denting or deforming during use due to insufficient rigidity, and ensuring the appearance and structural performance of the rear door outer panel 12.

[0081] In terms of specific structure, the outer panel support plate 14, for example, has a second protrusion 140 protruding towards the front of the vehicle, and the first reinforcing plate 134 has a third protrusion 1340 protruding towards the rear of the vehicle. The second protrusion 140 and the third protrusion 1340 are detachably connected by a second fastener 20. At this time, the outer panel support plate 14 and the first reinforcing plate 134 of the tailgate reinforcing beam 13 are detachably connected by the second protrusion 140 and the third protrusion 1340, which can improve the overall structural lightness and deformation resistance of the tailgate assembly. When the tailgate is subjected to external forces, it is beneficial to disperse and transmit the external forces. At the same time, the detachable connection also facilitates subsequent maintenance and component replacement.

[0082] It is worth mentioning that, since the upper part of the outer panel support plate 14 is sandwiched between the rear door outer panel 12 and the second reinforcing plate 135, the rear door outer panel 12, the outer panel support plate 14 and the second reinforcing plate 135 are riveted together in terms of specific connection.

[0083] It is also worth mentioning that the aforementioned second fastener 20 is, for example, a bolt, with a welded nut provided on one of the second protrusion 140 and the third protrusion 1340. The bolt passes through the through holes on the second protrusion 140 and the third protrusion 1340 in sequence and is screwed to the welded nut to achieve a detachable connection between the outer panel support plate 14 and the rear door reinforcing beam 13.

[0084] Combination Figure 5 and Figure 13 As shown, in some exemplary embodiments, a door lock mounting plate 15 is provided in the cavity. The door lock mounting plate 15 includes a first folding plate 151 and a second folding plate 152 connected together. The first folding plate 151 is welded to the side wall of the inner panel 11 of the rear door, and the second folding plate 152 is welded to the inner panel body 11a of the inner panel 11 of the rear door.

[0085] At this time, a door lock mounting plate 15 is installed in the cavity, and the first folding plate 151 of the door lock mounting plate 15 is welded to the side wall of the inner panel 11 of the rear door, and the second folding plate 152 of the door lock mounting plate 15 is welded to the inner panel body 11a of the inner panel 11 of the rear door. This not only improves the structural strength of the rear door assembly, but also provides a stable mounting base for the door lock.

[0086] 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... Figures 1 to 13 As shown, it may include, for example, a rear door sheet metal assembly 1 and a window frame 2, wherein the rear door sheet metal assembly 1 and the window frame 2 form a window.

[0087] The tailgate sheet metal assembly 1 includes an inner tailgate panel 11 and an outer tailgate panel 12 that enclose the cavity, and a tailgate reinforcing beam 13 connecting the inner tailgate panel 11 and the outer tailgate panel 12. The tailgate reinforcing beam 13 is made of aluminum and is positioned at the upper opening of the cavity. The window frame 2 is shaped like a "∩" and includes longitudinal beams 20a located in the left-right direction of the vehicle, and a crossbeam connecting the two longitudinal beams 20a. The window frame 2 is made of extruded aluminum and is welded to the tailgate reinforcing beam 13 via the longitudinal beams 20a on both sides.

[0088] Among them, the rear door reinforcing beam 13 has a fitting part 130 formed on it, which is attached to the lower part of the longitudinal beam 20a. The periphery of the fitting part 130 is welded to the longitudinal beam 20a.

[0089] Among them, the connecting parts of each longitudinal beam 20a and the rear door reinforcing beam 13 are covered with decorative panels 3 on the side facing the front of the vehicle. Each decorative panel 3 has a first sealing surface 303 facing the front of the vehicle. The first sealing surface 303, the front side 21 of the window frame 2 and the second sealing surface 111 on the inner panel 11 of the rear door are arranged on the same plane and are all used to press against the door frame sealing strip at the rear of the vehicle body.

[0090] The decorative panel 3 covers the front side of the panel 1301 and has a first overlapping portion 301 that overlaps the longitudinal beam 20a and a second overlapping portion 302 that overlaps the inner panel 11 of the rear door. The side of the first overlapping portion 301 facing the front of the vehicle forms the upper part of the first sealing surface 303, and the side of the second overlapping portion 302 facing the front of the vehicle forms the lower part of the first sealing surface 303.

[0091] The rear tailgate reinforcing beam 13 has a first protrusion 131 near the fitting portion 130, which protrudes towards the rear of the vehicle. The rear tailgate outer panel 12 is detachably connected to the first protrusion 131 via a first fastener 10. Furthermore, a third groove 202 is provided on the lower part of the rear side surface 22 of the longitudinal beam 20a. The rear tailgate outer panel 12 has an embedding portion 121 that fits into the third groove 202, and the rear tailgate outer panel 12 is bonded to the longitudinal beam 20a via the embedding portion 121.

[0092] The tailgate reinforcing beam 13 has a first reinforcing plate 134 attached to the outer side of the inner tailgate panel 11 and a second reinforcing plate 135 attached to the inner side of the outer tailgate panel 12. The tailgate reinforcing beam 13 is riveted to the inner tailgate panel 11 via the first reinforcing plate 134, and to the outer tailgate panel 12 via the second reinforcing plate 135.

[0093] An outer panel support plate 14 is also provided within the cavity formed by the inner rear door panel 11 and the outer rear door panel 12. The upper part of the outer panel support plate 14 is sandwiched between the outer rear door panel 12 and the second reinforcing plate 135. Furthermore, the outer panel support plate 14 has a second protrusion 140 protruding towards the front of the vehicle, and the first reinforcing plate 134 has a third protrusion 1340 protruding towards the rear of the vehicle. The second protrusion 140 and the third protrusion 1340 are detachably connected by a second fastener 20.

[0094] The door lock mounting plate 15 is provided in the cavity formed by the inner panel 11 and the outer panel 12 of the rear door. The door lock mounting plate 15 includes a first folding plate 151 and a second folding plate 152 connected together. The first folding plate 151 is welded to the side wall of the inner panel 11 of the rear door, and the second folding plate 152 is welded to the inner panel body 11a of the inner panel 11 of the rear door.

[0095] In the preferred embodiment of the above-mentioned rear door assembly, the specific settings and arrangements of the rear door sheet metal component 1, window frame 2, and the connection structure between the rear door sheet metal component 1 and the window frame 2 can still be referred to the descriptions in the above-mentioned exemplary embodiments. Furthermore, in this preferred embodiment, the beneficial effects brought about by the design of the rear door sheet metal component 1, window frame 2, and the connection structure between the rear door sheet metal component 1 and the window frame 2 can also be referred to the descriptions in the above-mentioned exemplary embodiments.

[0096] The tailgate assembly of this embodiment uses an aluminum tailgate reinforcing beam 13 and an extruded aluminum window frame 2, which can reduce the weight of the tailgate assembly and facilitate the lightweight design of the tailgate assembly. Furthermore, the tailgate reinforcing beam 13 connects the window frame 2 and the inner and outer panels of the tailgate to form a whole, which can improve the connection strength between the window frame 2 and the tailgate sheet metal assembly 1, ensure the structural stability of the tailgate assembly, and reduce problems such as shaking and abnormal noise.

[0097] An embodiment of the second aspect of this application provides a vehicle having a tailgate assembly as described above.

[0098] In this embodiment, the vehicle uses the aforementioned tailgate assembly, where an aluminum tailgate reinforcing beam 13 is used to form an integral whole between the aluminum window frame 2 and the tailgate sheet metal assembly 1. This improves the connection strength between the window frame 2 and the tailgate sheet metal assembly 1, ensures the structural stability of the tailgate assembly, prevents the window frame 2 from shaking or making abnormal noises during vehicle operation, and also facilitates the lightweight design of the tailgate assembly, thereby improving the quality of the vehicle.

[0099] 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 assembly (1) and a window frame (2) that surrounds the window with the rear door sheet metal assembly (1). The rear door sheet metal assembly (1) includes a rear door inner panel (11) and a rear door outer panel (12) that form a cavity, and a rear door reinforcing beam (13) connected between the rear door inner panel (11) and the rear door outer panel (12). The rear door reinforcing beam (13) is made of aluminum and is positioned at the upper opening of the cavity. The window frame (2) includes a longitudinal beam (20a) located in the left-right direction of the vehicle, and a crossbeam connecting the two longitudinal beams (20a). The window frame (2) is made of extruded aluminum and is connected to the rear door reinforcing beam (13) through the longitudinal beams (20a) on both sides.

2. The tailgate assembly according to claim 1, characterized in that: The rear door reinforcing beam (13) has a fitting part (130) formed on it, which is in close contact with the lower part of the longitudinal beam (20a). The periphery of the fitting part (130) is welded to the longitudinal beam (20a).

3. The tailgate assembly according to claim 2, characterized in that: The lower part of the front side (21) of the window frame (2) is provided with a first groove (201). The fitting part (130) includes a panel (1301) embedded in the first groove (201), a support plate (1302) supporting the longitudinal beam (20a), and a fitting plate (1303) fitting with the inner side (23) of the window frame (2). The rear door reinforcing beam (13) is welded to the longitudinal beam (20a) through the insert plate (1301), the support plate (1302) and the bonding plate (1303).

4. The tailgate assembly according to claim 3, characterized in that: The connecting parts of each of the longitudinal beams (20a) and the rear door reinforcing beam (13) are covered with decorative panels (3) on the side facing the front of the vehicle. Each of the decorative panels (3) has a first sealing surface (303) facing the front of the vehicle. The first sealing surface (303), the front side (21) of the window frame (2) and the second sealing surface (111) on the inner panel (11) of the rear door are coplanar and are used to press against the door frame sealing strip at the rear of the vehicle body.

5. The tailgate assembly according to claim 4, characterized in that: The decorative panel (3) covers the front side of the panel (1301) and has a first overlapping portion (301) that overlaps the longitudinal beam (20a) and a second overlapping portion (302) that overlaps the inner panel (11) of the rear door. The first overlapping portion (301) facing the front of the vehicle constitutes the upper part of the first sealing surface (303), and the second overlapping portion (302) facing the front of the vehicle constitutes the lower part of the first sealing surface (303).

6. The tailgate assembly according to claim 2, characterized in that: The rear tailgate reinforcing beam (13) has a first protrusion (131) near the fitting portion (130), the first protrusion (131) protruding towards the rear of the vehicle, and the rear tailgate outer panel (12) is detachably connected to the first protrusion (131) by a first fastener (10); and / or, The rear side (22) of the longitudinal beam (20a) is provided with a third groove (202) at the lower part, and the rear door outer panel (12) has an embedded part (121) embedded in the third groove (202). The rear door outer panel (12) is bonded to the longitudinal beam (20a) through the embedded part (121).

7. The tailgate assembly according to claim 1, characterized in that: The rear door reinforcing beam (13) has a first reinforcing plate (134) attached to the outer side of the rear door inner panel (11) and a second reinforcing plate (135) attached to the inner side of the rear door outer panel (12). The rear door reinforcing beam (13) is riveted to the rear door inner panel (11) via the first reinforcing plate (134), and the rear door reinforcing beam (13) is riveted to the rear door outer panel (12) via the second reinforcing plate (135).

8. The tailgate assembly according to claim 7, characterized in that: The cavity is provided with an outer plate support plate (14), the upper part of which is sandwiched between the rear door outer plate (12) and the second reinforcing plate (135). The outer support plate (14) has a second protrusion (140) protruding towards the front of the vehicle, and the first reinforcing plate (134) has a third protrusion (1340) protruding towards the rear of the vehicle. The second protrusion (140) and the third protrusion (1340) are detachably connected by a second fastener (20).

9. The tailgate assembly according to any one of claims 1-8, characterized in that: The cavity is provided with a door lock mounting plate (15), which includes a first folding plate (151) and a second folding plate (152) connected together. The first folding plate (151) is welded to the side wall of the inner panel of the rear door (11), and the second folding plate (152) is welded to the inner panel body (11a) of the inner panel of the rear door (11).

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

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