A back door assembly and vehicle

Abstract

The embodiment of the present application provides a back door assembly and a vehicle. The back door assembly comprises an outer plate, an inner plate which is spaced apart from the outer plate along a first direction, and a spare tire reinforcing plate which is arranged between the inner plate and the outer plate, wherein the spare tire reinforcing plate comprises a first plate-shaped body, a ring-shaped reinforcing portion is arranged on the first plate-shaped body, the reinforcing portion is protruded towards the outer plate along the first direction and connected with the outer plate, and edges of the first plate-shaped body are provided with a plurality of supporting legs; the supporting legs extend towards the inner plate along the first direction and are connected with the inner plate. The back door assembly provided by the embodiment of the present application can improve the rigidity and the anti-deformation capability of the back plate assembly, reduce the generation of the deformation problem of the back plate assembly, and improve the quality and the user experience of the vehicle by arranging the ring-shaped reinforcing portion and the plurality of supporting legs on the first plate-shaped body of the spare tire reinforcing plate.

Description

Technical Field

[0001] This application relates to the field of vehicle door technology, and more particularly to a tailgate assembly and a vehicle. Background Technology

[0002] With the development of the automotive industry, users have higher and higher requirements for the multi-functionality of vehicles. For example, in order to meet users' off-road needs, a spare tire is usually required on the vehicle.

[0003] In related technologies, the spare tire is usually mounted on the tailgate assembly of the vehicle. However, due to the weight of the spare tire, the tailgate assembly is prone to deformation, which in turn reduces the vehicle's weight and user experience. Utility Model Content

[0004] This application provides a tailgate assembly and a vehicle, aiming to improve the problems of tailgate assembly being prone to deformation, which reduces vehicle quality and user experience.

[0005] In a first aspect, this application provides a tailgate assembly, the tailgate assembly comprising: an outer panel; an inner panel, the inner panel and the outer panel being spaced apart along a first direction; and a spare tire reinforcement plate, the spare tire reinforcement plate being disposed between the inner panel and the outer panel, the spare tire reinforcement plate comprising a first plate-shaped body, the first plate-shaped body being provided with an annular reinforcing portion, the reinforcing portion protruding toward the outer panel along the first direction and connected to the outer panel, the edge of the first plate-shaped body being provided with a plurality of supporting feet, the supporting feet extending toward the inner panel along the first direction and connected to the inner panel.

[0006] In this embodiment, by providing a reinforcing part and multiple supporting feet on the first plate-shaped body of the spare tire reinforcement plate, the reinforcing part is annular and protrudes towards the outer plate along the first direction and connects with the outer plate. This can improve the bending rigidity of the spare tire reinforcement plate and enhance the deformation resistance of the outer plate. The multiple supporting feet are located at the edge of the first plate-shaped body, and each supporting foot extends towards the inner plate along the first direction and connects with the inner plate. This can improve the support rigidity between the spare tire reinforcement plate and the inner plate, enhance the deformation resistance of the inner plate, improve the rigidity and deformation resistance of the rear panel assembly, reduce the occurrence of deformation problems in the rear panel assembly, and thus improve the quality of the vehicle and the user experience.

[0007] Optionally, the reinforcing portion is at least two, and the at least two reinforcing portions include a first reinforcing portion and a second reinforcing portion. Both the first reinforcing portion and the second reinforcing portion are annular, and the first reinforcing portion is disposed on the outside of the second reinforcing portion.

[0008] In this embodiment, by providing at least a first reinforcing part and a second reinforcing part, both of which are annular, on the first plate-shaped body, with the first reinforcing part located outside the second reinforcing part, two annular reinforcing parts are provided in the inner and outer regions of the first plate-shaped body, which can further improve the bending rigidity of the spare tire reinforcing plate and thus further improve the deformation resistance of the rear door assembly.

[0009] Optionally, the support foot includes a first support plate and a second support plate, one end of the first support plate is connected to the first plate-shaped body, the other end of the first support plate is connected to one end of the second support plate, and the other end of the second support plate is connected to the inner plate; wherein, the first support plate extends toward the inner plate along the first direction, and the first support plate and the second support plate are set at an angle.

[0010] In practical applications, by making the support foot include a first support plate and a second support plate, with the first support plate and the second support plate set at an angle, the support foot can form a more stable support structure between the first plate-shaped body and the inner plate, which can further improve the support stiffness between the spare tire reinforcement plate and the inner plate, improve the deformation resistance of the inner plate, and improve the rigidity and deformation resistance of the rear panel assembly.

[0011] Optionally, the tailgate assembly further includes a lock reinforcement plate and a hinge reinforcement plate, wherein the lock reinforcement plate, the spare tire reinforcement plate and the hinge reinforcement plate are sequentially disposed on the inner panel along a second direction, wherein the second direction intersects with the first direction.

[0012] In this embodiment, by setting a lock reinforcement plate and a hinge reinforcement plate on the inner panel, the lock reinforcement plate can strengthen the installation area of ​​the lock on the inner panel, and the hinge reinforcement plate can strengthen the installation area of ​​the hinge on the inner panel. Combined with the supporting and strengthening effect of the spare tire reinforcement plate, the overall strength and rigidity of the inner panel can be improved, thereby effectively improving the load-bearing capacity and deformation resistance of the rear door assembly.

[0013] Optionally, the hinge reinforcement plate includes a second body disposed along a third direction, the second body having a first extension and a second extension respectively disposed at both ends along the third direction, the first extension and the second extension extending toward the spare tire reinforcement plate along the second direction; wherein, at least one of the first extension and the second extension is provided with a first protrusion, the first protrusion extending toward the outer plate along a first direction, and the first protrusion and the inner plate enclosing each other to form a first cavity structure, the third direction intersecting the first direction and the second direction in pairs.

[0014] In practical applications, by providing a first protrusion in at least one of the first extension and the second extension, and enabling the first protrusion and the inner panel to enclose and form a first cavity structure, the rigidity of the hinge mounting area on the inner panel can be effectively improved, further enhancing the deformation resistance of the inner panel and the tailgate assembly. This also reduces the weight-induced drop of the tailgate assembly, minimizing dynamic drop and vibration. Furthermore, a smaller drop in the tailgate assembly facilitates adjustment of the clearance difference between the tailgate assembly and the vehicle during final assembly.

[0015] Optionally, the second body is provided with a plurality of first reinforcing ribs, which are spaced apart along a third direction on the second body and penetrate through the second body.

[0016] In this embodiment, by setting multiple first reinforcing ribs that penetrate the second body, the rigidity of the second body can be improved, the rigidity performance of the hinge mounting area on the inner panel can be improved more effectively, the deformation resistance of the inner panel can be further improved, and thus the deformation resistance of the rear door assembly can be improved.

[0017] Optionally, the lock reinforcement plate includes a third body disposed along a third direction, and a third extension is disposed at one end of the third body away from the spare tire reinforcement plate along the second direction. The third extension extends toward the edge of the inner plate and is connected to the inner plate. The third direction intersects the first direction and the second direction in pairs.

[0018] In this embodiment, by providing a third extension in the lock reinforcement plate, the third extension extends toward the edge of the inner plate and connects with the inner plate, which can effectively improve the rigidity of the locking installation area on the inner plate, further improve the deformation resistance of the inner plate, improve the deformation resistance of the tailgate assembly, and reduce the occurrence of dynamic sinking of the tailgate assembly and reduce the vibration of the tailgate assembly.

[0019] Optionally, the third body is provided with a second reinforcing rib.

[0020] In this embodiment, by setting a second reinforcing rib on the third body, the rigidity of the third body can be improved, which can effectively improve the rigidity performance of the locking installation area on the inner panel, further improve the deformation resistance of the inner panel, and thus improve the deformation resistance of the rear door assembly.

[0021] Optionally, the tailgate assembly further includes multiple buffer components, which are spaced apart. Each buffer component includes a buffer portion and a connecting portion that are connected to each other. The connecting portion passes through the outer panel and is connected to the first plate-shaped body. The buffer portion abuts against the outer panel and is an elastic buffer portion, which is used to provide cushioning for the spare tire.

[0022] In this embodiment, by setting a buffer component including a buffer section, which is an elastic buffer section, the elastic buffer section contacts the spare tire to provide cushioning for the spare tire, thereby reducing the swaying of the spare tire. When the spare tire sways, the elastic buffer section can compress and deform to absorb some energy, thereby reducing the vibration and energy transmitted from the spare tire to the outer panel. This reduces the deformation and cracking problems caused by the swaying spare tire to the outer panel, and reduces the abnormal noise problem of the tailgate assembly caused by the impact between the swaying spare tire and the outer panel. In this way, the durability and noise, vibration, and harshness (NVH) performance of the vehicle can be enhanced. Furthermore, by setting multiple buffer components, which can abut against the spare tire at different positions on the outer panel, a more comprehensive cushioning effect can be provided for the spare tire, further reducing the vibration and energy transmitted from the spare tire to the outer panel, further reducing the deformation and cracking problems of the outer panel caused by the swaying spare tire, and further reducing the abnormal noise of the tailgate assembly caused by the impact between the swaying spare tire and the outer panel. This further enhances the durability and NVH performance of the vehicle.

[0023] Secondly, this application provides a vehicle comprising: a tailgate assembly as described above.

[0024] In the vehicle provided in this application embodiment, the tailgate assembly has a reinforcing part and multiple support feet on the first plate-shaped body of the spare tire reinforcing plate. The reinforcing part is annular and protrudes towards the outer plate along a first direction and is connected to the outer plate. This can improve the bending rigidity of the spare tire reinforcing plate and the deformation resistance of the outer plate. The multiple support feet are located at the edge of the first plate-shaped body, and each support foot extends towards the inner plate along the first direction and is connected to the inner plate. This can improve the support rigidity between the spare tire reinforcing plate and the inner plate and improve the deformation resistance of the inner plate. This can improve the rigidity and deformation resistance of the tailgate assembly, reduce the occurrence of deformation problems in the tailgate assembly, and thus improve the quality of the vehicle and the user experience. Attached Figure Description

[0025] Figure 1 This is an isometric view of a tailgate assembly provided in one embodiment of this application;

[0026] Figure 2 This is one of the front views of a rear door assembly provided in an embodiment of this application;

[0027] Figure 3 This is a bottom view of a rear tailgate assembly provided in one embodiment of this application;

[0028] Figure 4 This is a second front view of the rear door assembly provided in one embodiment of this application;

[0029] Figure 5 This is a schematic diagram of the spare tire reinforcement plate of the rear tailgate assembly provided in one embodiment of this application;

[0030] Figure 6 This is a top view of the spare tire reinforcement plate of the tailgate assembly provided in one embodiment of this application;

[0031] Figure 7 This is a left view of the spare tire reinforcement plate of the tailgate assembly provided in one embodiment of this application;

[0032] Figure 8 yes Figure 4 A front view of the rear tailgate assembly without the spare tire reinforcement plate;

[0033] Figure 9 This is a structural schematic diagram of a lock reinforcement plate, hinge reinforcement plate, and motor mounting plate of a rear door assembly provided in an embodiment of this application;

[0034] Figure 10 This is a front view of the hinge reinforcement plate of the tailgate assembly provided in one embodiment of this application;

[0035] Figure 11 This is a front view of the chain reinforcement plate of the rear door assembly provided in one embodiment of this application;

[0036] Figure 12 yes Figure 1 A front view of the rear tailgate assembly;

[0037] Figure 13 yes Figure 12 Cross-sectional view of the rear tailgate assembly at point HH;

[0038] Figure 14 yes Figure 12 Cross-sectional view of the rear tailgate assembly at point KK;

[0039] Figure 15 This is a front view of a rear door assembly with the inner panel removed, provided in an embodiment of this application;

[0040] Figure 16 yes Figure 12 Cross-sectional view of the rear tailgate assembly at JJ;

[0041] Figure 17 This is a front view of the spare tire nut plate of the tailgate assembly provided in one embodiment of this application;

[0042] Figure 18 This is a side view of the spare tire nut plate of the tailgate assembly provided in one embodiment of this application;

[0043] Figure 19 This is the third front view of the tailgate assembly provided in one embodiment of this application.

[0044] Figure 20 yes Figure 19 Cross-sectional view of the rear tailgate assembly AA in the middle;

[0045] Figure 21 yes Figure 19 Cross-sectional view of the rear tailgate assembly at point BB;

[0046] Figure 22 yes Figure 19 Cross-sectional view of the rear tailgate assembly at point CC;

[0047] Figure 23 yes Figure 19 Cross-sectional view of the rear tailgate assembly at point DD;

[0048] Figure 24 yes Figure 19 Cross-sectional view of the rear tailgate assembly at EE;

[0049] Figure 25 yes Figure 19 Cross-sectional view of the rear tailgate assembly at the FF point;

[0050] Figure 26 yes Figure 19 Cross-sectional view of the rear tailgate assembly at point GG;

[0051] Explanation of reference numerals in the attached figures:

[0052] 1-Outer panel; 101-Second mounting hole; 2-Inner panel; 3-Spare tire reinforcing plate; 31-First plate-shaped body; 310-First mounting hole; 32-Reinforcing part; 321-First reinforcing part; 322-Second reinforcing part; 33-Supporting foot; 331-First support plate; 332-Second support plate; 34-Diagonal brace structure; 4-Locking reinforcing plate; 41-Second body; 42-First extension; 43-Second extension; 430-First protrusion; 44-First reinforcing rib; 5-Hinge 51-Reinforcing plate; 52-Third body; 53-Second reinforcing rib; 6-Buffer; 61-Buffer part; 62-Connecting part; 7-Spare tire mounting bracket; 71-Barrel-shaped body; 72-Support leg; 80-Spare tire nut plate; 81-Bracket nut plate; 82-Limitless positioner nut plate; 831-Upper nut plate; 832-Lower nut plate; 90-Upper hinge; 91-Lower hinge; 10-Motor mounting plate; X-First direction; Y-Second direction; Z-Third direction. Detailed Implementation

[0053] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0054] With the development of the automotive industry, users have higher and higher requirements for the multi-functionality of vehicles. For example, in order to meet users' off-road needs, a spare tire is usually required on the vehicle.

[0055] Vehicles typically include a tailgate assembly, mounted at the rear of the vehicle. The spare tire is usually carried on the tailgate assembly. Tailgate assemblies can be categorized into side-opening and top-opening types based on their opening mechanism. Top-opening tailgate assemblies are primarily driven by gas springs or electric struts, lifting the tailgate assembly upwards along the vehicle's height to open, which strictly limits the weight of the top-opening tailgate assembly. However, since spare tires are usually full-size, their weight makes the tailgate assembly carrying the spare tire quite heavy. If a top-opening tailgate assembly were used, it would require a larger driving load on the gas springs or electric struts, leading to difficulties in opening the tailgate and potential safety hazards.

[0056] In related technologies, the tailgate assembly is usually a side-opening tailgate assembly. However, due to the heavy weight of the full-size spare tire, the weight of the spare tire itself, as well as the shaking caused by the spare tire during vehicle operation, can easily cause deformation of the tailgate assembly, thereby reducing the quality of the vehicle and the user experience.

[0057] This application provides a tailgate assembly, specifically, a side-opening tailgate assembly, such as... Figures 1-26 As shown, the rear door assembly includes: an outer panel 1; an inner panel 2, the inner panel 2 and the outer panel 1 being spaced apart along a first direction X; and a spare tire reinforcement plate 3, the spare tire reinforcement plate 3 being disposed between the inner panel 2 and the outer panel 1. The spare tire reinforcement plate 3 includes a first plate-shaped body 31, the first plate-shaped body 31 being provided with an annular reinforcing part 32, the reinforcing part 32 protruding towards the outer panel 1 along the first direction X and being connected to the outer panel 1, and the edge of the first plate-shaped body 31 being provided with a plurality of support feet 33, the support feet 33 extending towards the inner panel 2 along the first direction X and being connected to the inner panel 2.

[0058] Specifically, such as Figures 1-5 As shown, the first direction X is the length direction of the vehicle, such as... Figure 3 The X-axis direction is shown.

[0059] The edges of the outer panel 1 and the inner panel 2 can be connected by edging, so that the outer panel 1 and the inner panel 2 can form an integral frame structure. The outer panel 1 and the inner panel 2 are spaced apart along the first direction X, so that the spare tire reinforcing plate 3 can be set between the inner panel 2 and the outer panel 1.

[0060] like Figures 4-5As shown, the spare tire reinforcement plate 3 includes a first plate-shaped body 31, a reinforcement portion 32, and multiple support feet 33. The first plate-shaped body 31 has a flat plate structure. The reinforcement portion 32 is disposed on the first plate-shaped body 31 and is annularly arranged. The annulus can be circular, elliptical, square, etc. The reinforcement portion 32 protrudes from the first plate-shaped body 31 along the first direction X toward the outer plate 1, and the reinforcement portion 32 can be connected to the outer edge by welding, bonding, or other methods. In some embodiments, multiple adhesive grooves can be spaced apart on the annular reinforcement portion 32. The adhesive grooves are filled with vibration-damping adhesive, and the reinforcement portion 32 is bonded to the outer plate 1 through the vibration-damping adhesive. This can reduce the load transmitted from the spare tire to the outer plate 1 and transfer it to the spare tire reinforcement plate 3, thereby improving the rigidity and vibration isolation effect of the spare tire reinforcement plate 3.

[0061] like Figures 5-6 As shown, multiple support feet 33 are spaced apart on the edge of the first plate-shaped body 31, and one end of each support foot 33 is connected to the first plate-shaped body 31, while the other end extends toward the inner plate 2 along the first direction X and is welded to the inner plate 2, so that the support foot 33 can be fixed between the inner plate 2 and the first plate-shaped body 31.

[0062] For example, the number of support feet 33 can be 2, 3, 4, etc., and this application embodiment does not specifically limit this.

[0063] In this embodiment, by providing a reinforcing part 32 and multiple supporting feet 33 on the first plate-shaped body 31 of the spare tire reinforcing plate 3, the reinforcing part 32 is annular and protrudes along the first direction X toward the outer plate 1 and is connected to the outer plate 1, the bending rigidity of the spare tire reinforcing plate 3 can be improved and the deformation resistance of the outer plate 1 can be improved. The multiple supporting feet 33 are provided on the edge of the first plate-shaped body 31, and each supporting foot 33 extends along the first direction X toward the inner plate 2 and is connected to the inner plate 2, which can improve the support rigidity between the spare tire reinforcing plate 3 and the inner plate 2, improve the deformation resistance of the inner plate 2, improve the rigidity and deformation resistance of the rear panel assembly, reduce the occurrence of deformation problems in the rear panel assembly, and thus improve the quality of the vehicle and the user experience.

[0064] Optionally, there are at least two reinforcing parts 32, including a first reinforcing part 321 and a second reinforcing part 322. Both the first reinforcing part 321 and the second reinforcing part 322 are annular, and the first reinforcing part 321 is disposed on the outside of the second reinforcing part 322.

[0065] Specifically, such as Figure 5 As shown, there can be at least two reinforcing parts 32, and the at least two reinforcing parts 32 include a first reinforcing part 321 and a second reinforcing part 322, such as... Figure 5As shown by the two black lines, both the first reinforcing part 321 and the second reinforcing part 322 are annular structures. The diameter or length of the annular structure formed by the first reinforcing part 321 is greater than the diameter or length of the annular structure formed by the second reinforcing part 322. The second reinforcing part 322 is disposed in the outer region of the first plate-shaped body 31 and in the inner region of the first plate-shaped body 31, such that the first reinforcing part 321 is disposed outside the second reinforcing part 322, and there is a certain gap between the first reinforcing part 321 and the second reinforcing part 322.

[0066] For example, the number of reinforcing parts 32 can be 2, 3, 4, etc., and this application embodiment does not specifically limit this.

[0067] In this embodiment, by providing at least a first reinforcing part 321 and a second reinforcing part 322, both of which are annular, on the first plate-shaped body 31, with the first reinforcing part 321 disposed on the outside of the second reinforcing part 322, the inner and outer regions of the first plate-shaped body 31 are provided with two annular reinforcing parts, which can further improve the bending rigidity of the spare tire reinforcing plate 3, thereby improving the deformation resistance of the rear door assembly.

[0068] Optionally, the support foot 33 includes a first support plate 331 and a second support plate 332. One end of the first support plate 331 is connected to the first plate-shaped body 31, and the other end of the first support plate 331 is connected to one end of the second support plate 332. The other end of the second support plate 332 is connected to the inner plate 2. The first support plate 331 extends toward the inner plate 2 along the first direction X, and the first support plate 331 and the second support plate 332 are set at an angle.

[0069] Specifically, such as Figures 5-7 As shown, the support foot 33 includes a first support plate 331 and a second support plate 332. The two ends of the first support plate 331 are respectively connected to the first plate-shaped body 31 and the second support plate 332. The first support plate 331 extends towards the inner plate 2 along the first direction X. There is an angle between the first support plate 331 and the second support plate 332, which can be 90°. The second support plate 332 can be welded to the inner plate 2.

[0070] In practical applications, by making the support foot 33 include a first support plate 331 and a second support plate 332, with the first support plate 331 and the second support plate 332 set at an angle, the support foot 33 can form a more stable support structure between the first plate-shaped body 31 and the inner plate 2, which can further improve the support stiffness between the spare tire reinforcing plate 3 and the inner plate 2, improve the deformation resistance of the inner plate 2, and improve the rigidity and deformation resistance of the rear panel assembly.

[0071] Optionally, the tailgate assembly also includes a lock reinforcement plate 4 and a hinge reinforcement plate 5. The lock reinforcement plate 4, the spare tire reinforcement plate 3, and the hinge reinforcement plate 5 are sequentially disposed on the inner panel 2 along the second direction Y, wherein the second direction Y intersects with the first direction X.

[0072] Specifically, such as Figures 8-9 As shown, the second direction Y is the width direction of the vehicle, as... Figure 8 The Y-axis direction is shown.

[0073] The tailgate assembly also includes a lock reinforcement plate 4 and a hinge reinforcement plate 5. The inner panel 2 is provided with a lock mounting area, a spare tire bracket mounting area and a hinge mounting area in sequence along the second direction Y. The lock reinforcement plate 4 is fixedly installed in the lock mounting area, the spare tire reinforcement plate 3 is installed in the spare tire bracket mounting area and the hinge reinforcement plate 5 is installed in the hinge mounting area, so that the lock reinforcement plate 4, the spare tire reinforcement plate 3 and the hinge reinforcement plate 5 are arranged in sequence along the second direction Y on the inner panel 2.

[0074] In this embodiment, by setting a lock reinforcement plate 4 and a hinge reinforcement plate 5 on the inner panel 2, the lock reinforcement plate 4 can strengthen the installation area of ​​the lock on the inner panel 2, and the hinge reinforcement plate 5 can strengthen the installation area of ​​the hinge on the inner panel 2. Combined with the supporting and strengthening effect of the spare tire reinforcement plate 3, the overall strength and rigidity of the inner panel 2 can be improved, thereby effectively improving the load-bearing capacity and deformation resistance of the rear door assembly.

[0075] Optionally, the hinge reinforcement plate 5 includes a second body 41 disposed along a third direction Z. The second body 41 has a first extension 42 and a second extension 43 disposed at both ends along the third direction Z. The first extension 42 and the second extension 43 extend toward the spare tire reinforcement plate 3 along the second direction Y. At least one of the first extension 42 and the second extension 43 is provided with a first protrusion 430. The first protrusion 430 protrudes toward the outer plate 1 along the first direction X, and the first protrusion 430 and the inner plate 2 enclose to form a first cavity structure. The third direction Z intersects the first direction X and the second direction Y in pairs.

[0076] Specifically, such as Figures 8-10 As shown, the third direction Z represents the vehicle's height direction, such as... Figure 8 As shown on the Z-axis.

[0077] The hinge reinforcement plate 5 includes a second body 41. The second body 41 is disposed in the hinge mounting area on the inner plate 2 along the third direction Z. The two ends of the second body 41 along the third direction Z are respectively provided with a first extension 42 and a second extension 43. The first extension 42 is disposed at the top end of the second body 41 along the third direction Z, and the second extension 43 is located at the bottom end of the second body 41 along the third direction Z. The first extension 42 and the second extension 43 extend towards the spare tire reinforcement plate 3 along the second direction Y. At least one of the first extension 42 and the second extension 43 may be provided with a first protrusion 430. The first protrusion 430 protrudes towards the outer plate 1 along the first direction X, so that the first protrusion 430 and the inner plate 2 can be enclosed to form a first cavity structure.

[0078] In practical applications, by providing a first protrusion 430 in at least one of the first extension 42 and the second extension 43, and enabling the first protrusion 430 and the inner panel 2 to enclose and form a first cavity structure, the rigidity of the hinge mounting area on the inner panel 2 can be effectively improved, further enhancing the deformation resistance of the inner panel 2 and the tailgate assembly. This also reduces the weight-induced drop of the tailgate assembly, minimizing dynamic drop and tailgate assembly vibration. Furthermore, a smaller tailgate assembly drop facilitates adjusting the clearance difference between the tailgate assembly and the vehicle during final assembly.

[0079] In some embodiments, a first protrusion 430 is provided on both the first extension 42 and the second extension 43. The first protrusion 430 and the inner plate 2 enclose each other to form a first cavity structure, which further improves the rigidity performance of the hinge mounting area on the inner plate 2.

[0080] In some embodiments, such as Figure 8 As shown, the inner panel 2 is provided with a window frame at the upper end along the third direction Z. The first extension 42 extends to the area above the corner of the window frame. The first extension 42 covers and connects to the corner area of ​​the window frame and both sides of the corner area. This can effectively improve the rigidity performance of the window frame area of ​​the inner panel 2, improve the deformation resistance of the inner panel 2, and also reduce the pre-bending amount of the window frame and other areas of the inner panel 2.

[0081] Optionally, the second body 41 is provided with a plurality of first reinforcing ribs 44, which are spaced apart along the third direction Z on the second body 41 and penetrate through the second body 41.

[0082] Specifically, the inner panel 2 includes a bottom wall and a side wall connected to the bottom wall. The side wall extends toward the outer panel 1 along the first direction X. The second body 41 can be a Z-shaped structure, which includes a first plate arranged along the first direction X, and a second plate and a third plate respectively arranged on both sides of the first plate along the first direction X. The first plate is attached to the side wall. The second plate extends toward the spare tire reinforcing plate 3 along the second direction Y. The second plate is attached to the bottom wall. The first extension 42 and the second extension 43 are arranged on the second plate. The third plate extends toward the edge of the side wall along the second direction Y, that is, the third plate extends to the edge edging area of ​​the inner panel 2 and is welded to the edge of the side wall. This can improve the rigidity of the hinge mounting area on the inner panel 2 and improve the deformation resistance of the inner panel 2.

[0083] like Figure 10 As shown, the second plate is provided with multiple first reinforcing ribs 44, which penetrate the second body 41, as... Figure 9 and Figure 10 As shown, the first reinforcing rib 44 can be a protruding structure that runs through the first plate, the second plate and the third plate. The first reinforcing rib 44 is also a Z-shaped structure. The first reinforcing rib 44 of the Z-shaped structure can be divided into three segments: one segment runs through the first plate and extends along the first direction X on the first plate; one segment runs through the second plate and extends along the second direction Y on the second plate; and the last segment runs through the third plate and extends along the second direction Y on the third plate.

[0084] In this embodiment, by setting multiple first reinforcing ribs 44 penetrating the second body 41, the rigidity of the second body 41 can be improved, the rigidity performance of the hinge mounting area on the inner panel 2 can be improved more effectively, the deformation resistance of the inner panel 2 can be further improved, and the deformation resistance of the tailgate assembly can be improved. This is beneficial to improving the sinking performance, over-opening performance and torsional stiffness performance of the tailgate assembly, and can reduce quality problems such as poor closing engagement or inability to lock the tailgate assembly after long-term use by customers.

[0085] In some embodiments, the tailgate assembly also includes a hinge nut plate and a tailgate hinge. Two hinge mounting points are provided at Z intervals along the third direction on the first plate of the second body 41. The one located at the upper end is the upper hinge mounting point, and the one located at the lower end is the lower hinge mounting point. There are also two hinge nut plates, namely an upper nut plate 831 and a lower nut plate 832. The upper nut plate 831 is located at the upper hinge mounting point, and the lower nut plate 832 is located at the lower hinge mounting point. The corresponding tailgate hinge also includes an upper hinge 90 and a lower hinge 91. The upper hinge 90 is connected to the upper nut plate 831 through multiple fasteners passing through the first plate, and the lower hinge 91 is connected to the lower nut plate 832 through multiple fasteners passing through the first plate.

[0086] Optionally, the lock reinforcement plate 4 includes a third body 51 disposed along the third direction Z. The third body 51 is provided with a third extension 52 at one end away from the spare tire reinforcement plate 3 along the second direction Y. The third extension 52 extends toward the edge of the inner plate 2 and is connected to the inner plate 2.

[0087] Specifically, such as Figure 11 As shown, the third body 51 can be disposed in the lock mounting area of ​​the inner plate 2 along the third direction Z. The inner plate 2 includes a bottom wall and a side wall extending along the first direction X connected to the bottom wall. The third body 51 may specifically include a fourth plate disposed along the first direction X, which is in contact with the side wall, and a fifth plate disposed at the bottom end of the fourth plate along the first direction X. The fifth plate extends towards the spare tire reinforcement plate 3 along the second direction Y and is in contact with the bottom wall. A third extension 52 is disposed at the top end of the fourth plate along the first direction X. The third extension 52 is a plate-shaped structure and extends towards the edge of the side wall of the inner plate 2, that is, the third extension 52 extends to the edge edging area of ​​the inner plate 2, and the third extension 52 is welded to the inner plate 2.

[0088] In this embodiment, by providing a third extension 52 on the lock reinforcing plate 4, the rigidity performance of the lock mounting area on the inner plate 2 can be effectively improved, the deformation resistance of the inner plate 2 can be further improved, the deformation resistance of the tailgate assembly can be improved, and the occurrence of dynamic sinking of the tailgate assembly and vibration of the tailgate assembly can be reduced.

[0089] In some embodiments, the inner panel 2 is provided with a window frame at the upper end along the third direction Z, and a fourth extension may be provided on the fifth panel. The fourth extension extends to the area above the corner of the window frame. The fourth extension covers and connects to the corner area of ​​the window frame and both sides of the corner area, which can effectively improve the rigidity performance of the window frame area of ​​the inner panel 2, improve the deformation resistance of the inner panel 2, and help improve the sinking performance of the tailgate assembly and reduce the dynamic deformation matching the vehicle body.

[0090] In some embodiments, a second protrusion may be provided on the fifth plate and / or the fourth extension. The second protrusion protrudes towards the outer plate 1 along the first direction X, so that the second protrusion and the inner plate 2 can enclose to form a second cavity structure. This can effectively improve the rigidity of the locking installation area of ​​the inner plate 2, further improve the deformation resistance of the inner plate 2, improve the deformation resistance of the tailgate assembly, and help improve the sinking performance of the tailgate assembly and reduce the dynamic deformation matching the vehicle body.

[0091] Optionally, a second reinforcing rib 53 is provided on the third body 51.

[0092] Specifically, such as Figure 11As shown, the second reinforcing rib 53 on the third body 51 is disposed on the fifth plate of the third body 51, and the second reinforcing rib 53 is a protruding structure disposed on the fifth plate. In practical applications, by providing the second reinforcing rib 53 on the third body 51, the rigidity of the third body 51 can be improved, the rigidity performance of the locking installation area on the inner panel 2 can be effectively improved, the deformation resistance of the inner panel 2 can be further improved, and thus the deformation resistance of the rear door assembly can be improved.

[0093] In some embodiments, the tailgate assembly also includes a plurality of buffers 6, which are spaced apart. Each buffer 6 includes a buffer portion 61 and a connecting portion 62 connected to each other. The connecting portion 62 passes through the outer panel 1 and is connected to the first plate-shaped body 31. The buffer portion 61 abuts against the outer panel 1 and is an elastic buffer portion 61, which is used to provide cushioning for the spare tire.

[0094] Specifically, such as Figure 1 , Figure 12 , Figure 13 As shown, the outer plate 1 is provided with a mounting through hole. The buffer 6 may include a buffer part 61 and a connecting part 62. The buffer part 61 may be a block structure of any shape, such as a cylinder. The connecting part 62 may be fixedly provided at one end of the buffer part 61. The connecting part 62 may be a screw. The first plate-shaped body 31 is provided with a threaded hole at the position corresponding to the mounting through hole. When installing the buffer 6, the connecting part 62 passes through the mounting through hole and extends into the threaded hole, and is threadedly connected to the threaded hole. The bottom end of the buffer part 61 abuts against the outer plate 1, realizing the connection between the buffer 6 and the first plate-shaped body 31.

[0095] The buffer part 61 is located on the outside of the outer panel 1. The buffer part 61 is an elastic buffer part 61. The material of the elastic buffer part 61 can be silicone, rubber and latex, etc. The elastic buffer part 61 has a certain amount of compression, for example, the compression can be 2mm-5mm. When the spare tire is installed on the outer panel 1, the elastic buffer part 61 can come into contact with the spare tire. The elastic buffer part 61 can generate elastic deformation to provide cushioning for the spare tire.

[0096] like Figure 1 and Figure 12 As shown, there can be multiple buffer members 6, which are spaced apart on the first plate-shaped body 31, and are respectively disposed between the first reinforcing part 321 and the second reinforcing part 322.

[0097] In this embodiment, by providing a buffer 6 including a buffer part 61, which is an elastic buffer part 61, the elastic buffer part 61 contacts the spare tire to provide cushioning for the spare tire, thereby reducing the swaying of the spare tire. When the spare tire sways, the elastic buffer part 61 can compress and deform to absorb some energy, which can reduce the vibration and energy transmitted from the spare tire to the outer panel 1. This reduces the deformation and cracking problems caused by the swaying spare tire to the outer panel 1, and reduces the abnormal noise problem of the tailgate assembly caused by the impact between the swaying spare tire and the outer panel 1. In this way, the durability of the vehicle and the reduction of noise, vibration and acoustic vibration can be enhanced. The vehicle exhibits improved NVH (Noise, Vibration, Harshness) performance. By incorporating multiple buffers 6, which can engage with the spare tire at different locations on the outer panel 1, the vehicle provides more comprehensive cushioning, further reducing vibration and energy transmitted from the spare tire to the outer panel 1. This also reduces deformation and cracking of the outer panel 1 caused by the spare tire's movement, and minimizes abnormal noise from the tailgate assembly resulting from the impact between the moving spare tire and the outer panel 1. Ultimately, this enhances the vehicle's durability and NVH performance.

[0098] It should be noted that the number of buffers 6 can be 2, 3, 4, etc., and this application embodiment does not specifically limit this.

[0099] In some embodiments, such as Figure 1 , Figure 3 , Figure 12 , Figure 14 , Figure 15 , Figure 16 As shown, the rear door assembly also includes a spare tire mounting bracket 7. The spare tire mounting bracket 7 includes a barrel-shaped body 71 and multiple support legs 72 spaced apart at the edge of the barrel-shaped body 71. Multiple first mounting points are provided on the outer panel 1, and multiple second mounting points are provided on the spare tire reinforcing plate 3. A bracket nut plate 81 is provided at each second mounting point. Each support leg 72 corresponds to a bracket nut plate 81 at a first mounting point and a second mounting point. A fastener passes through a support leg 72, a first mounting point on the outer panel 1, a second mounting point on the spare tire reinforcing plate 3, and is threadedly connected to a bracket nut plate 81 in sequence. Thus, the barrel-shaped body 71 can be fixedly mounted on the outer panel 1, and the spare tire can be fixedly mounted on the barrel-shaped body 71.

[0100] Furthermore, it also includes a spare tire nut plate 80, which is welded to the inner wall of the barrel-shaped body 71, such as... Figure 17 and Figure 18As shown, the spare tire nut plate 80 can be U-shaped or barrel-shaped. The barrel-shaped body 71 has multiple spare tire mounting points, which can be connected to the spare tire by fasteners. The spare tire is threaded through the spare tire mounting points and connected to the spare tire nut plate 80, thus fixing the spare tire to the barrel-shaped body 71. In this way, the spare tire is connected to the inner plate 2 by multiple fasteners on the spare tire mounting bracket 7. This threaded structure, combined with the reinforced structure of the spare tire mounting bracket 7, can meet a certain degree of customer personalized modification requirements, such as replacing with a heavier, wider, larger spare tire or installing a storage backpack.

[0101] It should be noted that the number of spare tire mounting points can be 2, 3, 4, etc., and this application embodiment does not specifically limit this.

[0102] Furthermore, the support leg 72 can be equipped with flanges and / or triangular reinforcing ribs to improve the rigidity, durability, and NVH performance of the spare tire mounting area. This can reduce problems such as spare tire sinking and swaying caused by insufficient mounting rigidity, thereby improving the user experience.

[0103] In some embodiments, such as Figure 1 and Figure 12 As shown, multiple buffers 6 are arranged along the second direction Y on the left and right sides of the spare tire mounting bracket 7. At least two buffers 6 are arranged on the side near the lock reinforcing plate 4, and at least one buffer 6 is arranged on the side near the hinge reinforcing plate 5, which can provide a more uniform buffering effect for the spare tire.

[0104] In some embodiments, such as Figure 5 ,and Figure 19 As shown, the spare tire reinforcing plate 3 has two first mounting holes 310 in the middle of the first plate-shaped body 31, and two second mounting holes 101 are provided on the outer plate 1. The first mounting holes 310 and the second mounting holes 101 are opposite each other. The first mounting holes 310 and the second mounting holes 101 are used to install exhaust valves on the inner plate 2. Since the first mounting holes 310 and the second mounting holes 101 weaken the overall rigidity of the spare tire reinforcing plate 3 and the outer plate 1 to a certain extent, a flange structure can be provided around the first mounting holes 310 and the second mounting holes 101 to improve the rigidity.

[0105] In some embodiments, such as Figure 4 , Figure 8 and Figure 9 As shown, the rear door assembly also includes a motor mounting plate 10 and a limit switch nut plate 82. The motor mounting plate 10 is disposed in the window frame area on the inner panel 2 along the second direction Y, and the motor mounting plate 10 is connected to the inner panel 2. The upper side of the spare tire reinforcement plate 3 along the third direction Z overlaps with the motor mounting plate 10. The motor mounting plate 10 is used to install the wiper motor.

[0106] In some embodiments, such as Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the first plate-shaped body 31 of the spare tire reinforcement plate 3 is provided with a diagonal bracing structure 34 on the lower side along the second direction Y. The diagonal bracing structure 34 is Z-shaped and has multiple third reinforcing ribs. The third reinforcing ribs are used to enhance the rigidity of the diagonal bracing structure 34. The diagonal bracing structure 34 is connected to the inner plate 2, and the width of the diagonal bracing structure 34 in the second direction Y completely covers multiple buffer members 6 and multiple second mounting points. Among the multiple support feet 33, at least one support foot 33 is located on the left side of the diagonal bracing structure 34 along the second direction Y, and at least one support foot 33 is located on the right side of the diagonal bracing structure 34 along the second direction Y. In this way, the load transmitted by the spare tire can be supported by the two support feet 33 and the diagonal bracing structure 34 together, preventing the diagonal bracing structure 34 from bending and collapsing at the bend near the line connecting the two second mounting points near the diagonal bracing structure 34, improving the rigidity of the diagonal bracing structure 34, and improving the deformation resistance and support strength of the spare tire reinforcement plate 3. At least one support foot 33 is disposed at the middle position of the right side of the first plate-shaped body 31 along the second direction to enhance the central support rigidity of the spare tire reinforcing plate 3.

[0107] In some embodiments, the support foot 33 is also provided with reinforcing ribs, which can improve the deformation resistance of the support foot 33 and increase the support rigidity of the support foot 33. Furthermore, flange structures can be provided on both sides of the support foot 33 to further improve the support rigidity of the support foot.

[0108] Furthermore, such as Figure 4 As shown, the lower side of the diagonal brace structure 34 is provided with an unlimited limit switch installation area. The unlimited limit switch nut plate 82 is fixedly installed in the unlimited limit switch installation area, and the lower side of the diagonal brace structure 34 is connected to the edge area of ​​the inner panel 2. This can strengthen the edge area structure of the outer panel 1 and the inner panel 2, and also strengthen the rigidity of the unlimited limit switch installation area. This prevents the unlimited limit switch installation area from undergoing large elastic deformation or permanent deformation when the tailgate assembly is accidentally closed or opened after the unlimited limit switch is locked.

[0109] In this application, based on the reinforced structural design of each component in the aforementioned embodiments, the side-opening tailgate assembly can effectively solve problems such as body interference, abnormal noise, and sealing performance issues under harsh road conditions or extreme off-road conditions. Simultaneously, it reduces the occurrence of quality problems such as poor door closing engagement, abnormal door closing noise, inability to lock, and poor appearance matching in the side-opening tailgate assembly after long-term use, thereby improving vehicle quality and user experience.

[0110] In some embodiments, such as Figures 19-24As shown, the outer panel 1, inner panel 2, and spare tire reinforcing plate 3 can form a closed H-shaped or U-shaped cavity structure. Through the above cavity structure, the vibration generated by the spare tire is attenuated and absorbed, which enhances the rigidity and durability of the spare tire installation area, reduces the amount of spare tire sinking, and at the same time, prevents the spare tire from seriously intruding into the outer panel 1 when the vehicle brakes suddenly; prevents the spare tire from rolling over and deforming when turning sharply; and prevents the spare tire from sinking or even falling off under bumpy conditions.

[0111] In some embodiments, such as Figures 25-26 As shown, the outer panel 1 and the inner panel 2 have a closed U-shaped cross section in the window frame area. This cross section ensures the high bending and torsional stiffness of the window frame and reduces the risk of window frame deformation, abnormal noise, water leakage, light leakage and other quality problems caused by the vehicle under extreme off-road conditions.

[0112] This application also provides a vehicle, which includes the tailgate assembly of any of the above embodiments.

[0113] In the vehicle provided in this application embodiment, the tailgate assembly has a reinforcing part 32 and multiple supporting feet 33 provided on the first plate-shaped body 31 of the spare tire reinforcing plate 3. The reinforcing part 32 is annular and protrudes from the plate-shaped body along the first direction X toward the outer plate 1 and is connected to the outer plate 1. This can improve the bending rigidity of the spare tire reinforcing plate 3 and the deformation resistance of the outer plate 1. The multiple supporting feet 33 are provided at the edge of the first plate-shaped body 31, and each supporting foot 33 extends along the first direction X toward the inner plate 2 and is connected to the inner plate 2. This can improve the supporting rigidity between the spare tire reinforcing plate 3 and the inner plate 2 and improve the deformation resistance of the inner plate 2. This can improve the rigidity and deformation resistance of the tailgate assembly, reduce the occurrence of deformation problems in the tailgate assembly, and thus improve the quality of the vehicle and the user experience.

[0114] In this application, unless otherwise expressly defined, the terms "installation," "connection," and "linking" 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 based on the specific circumstances.

[0115] The terms “first”, “second”, etc., used in this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0116] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A back door assembly, characterized by The tailgate assembly includes: outer panel(1); Inner plate (2), the inner plate (2) and the outer plate (1) are spaced apart along a first direction (X); And a spare tire reinforcement plate (3), the spare tire reinforcement plate (3) is disposed between the inner plate (2) and the outer plate (1), the spare tire reinforcement plate (3) includes a first plate-shaped body (31), the first plate-shaped body (31) is provided with an annular reinforcement part (32), the reinforcement part (32) protrudes towards the outer plate (1) along the first direction (X) and is connected to the outer plate (1), the edge of the first plate-shaped body (31) is provided with a plurality of support feet (33), the support feet (33) extend towards the inner plate (2) along the first direction (X) and are connected to the inner plate (2).

2. The tailgate assembly according to claim 1, characterized in that, The reinforcing part (32) is at least two, and the at least two reinforcing parts (32) include a first reinforcing part (321) and a second reinforcing part (322). The first reinforcing part (321) and the second reinforcing part (322) are both annular, and the first reinforcing part (321) is disposed on the outside of the second reinforcing part (322).

3. The tailgate assembly of claim 1, wherein, The support foot (33) includes a first support plate (331) and a second support plate (332). One end of the first support plate (331) is connected to the first plate-shaped body (31), and the other end of the first support plate (331) is connected to one end of the second support plate (332). The other end of the second support plate (332) is connected to the inner plate (2). The first support plate (331) extends toward the inner plate (2) along the first direction (X), and the first support plate (331) and the second support plate (332) are arranged at an angle.

4. The tailgate assembly of claim 1, wherein, The rear door assembly also includes a lock reinforcement plate and a hinge reinforcement plate (5). The lock reinforcement plate, the spare tire reinforcement plate (3), and the hinge reinforcement plate (5) are sequentially arranged on the inner panel (2) along the second direction (Y), wherein the second direction (Y) intersects with the first direction (X).

5. The tailgate assembly of claim 4, wherein, The hinge reinforcement plate (5) includes a second body (41) arranged along a third direction (Z). The second body (41) is provided with a first extension (42) and a second extension (43) at both ends along the third direction (Z). The first extension (42) and the second extension (43) extend toward the spare tire reinforcement plate (3) along the second direction (Y). At least one of the first extension (42) and the second extension (43) is provided with a first protrusion (430), the first protrusion (430) protrudes toward the outer plate (1) along the first direction (X), and the first protrusion (430) and the inner plate (2) enclose to form a first cavity structure, the third direction (Z) intersects the first direction (X) and the second direction (Y) in pairs.

6. The tailgate assembly of claim 5, wherein, The second body (41) is provided with a plurality of first reinforcing ribs (44), which are spaced apart along the third direction (Z) on the second body (41) and penetrate the second body (41).

7. The tailgate assembly of claim 4, wherein, The lock reinforcement plate includes a third body (51) arranged along a third direction (Z). The third body (51) has a third extension (52) at one end along the second direction (Y) away from the spare tire reinforcement plate (3). The third extension (52) extends toward the edge of the inner plate (2) and is connected to the inner plate (2). The third direction (Z) intersects the first direction (X) and the second direction (Y) in pairs.

8. The tailgate assembly according to claim 7, characterized in that, The third body (51) is provided with a second reinforcing rib (53).

9. The tailgate assembly according to claim 1, characterized in that, The rear door assembly also includes a plurality of buffers (6), which are spaced apart; The buffer (6) includes a buffer part (61) and a connecting part (62) connected to each other. The connecting part (62) passes through the outer plate (1) and is connected to the first plate-shaped body (31). The buffer part (61) abuts against the outer plate (1) and is an elastic buffer part (61). The buffer part (61) is used to provide cushioning for the spare tire.

10. A vehicle, characterized in that, The vehicle includes the tailgate assembly as described in any one of claims 1-9.

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