Back door assembly and vehicle

Abstract

The utility model discloses a back door assembly and a vehicle, the back door assembly comprises an inner plate, an outer plate and a support plate, the outer plate is matched with the inner plate, the outer plate comprises an upper plate part, a lower plate part and a tail lamp mounting part which are arranged along the height direction, the tail lamp mounting part is positioned between the upper plate part and the lower plate part, and the upper plate part and the lower plate part are connected with each other in sequence; the supporting plate is arranged between the inner plate and the outer plate and located on the lower plate portion, the tail lamp installation portion is recessed towards the inner plate, the supporting plate is provided with a bearing portion corresponding to the shape of the cross section of the tail lamp installation portion, the bearing portion supports the tail lamp installation portion, and the supporting plate is connected with the inner plate and the outer plate. According to the technical scheme, the overall rigidity and strength of the back door are improved, the risk of cracking of metal plates and welding spots is reduced, and the problem that in-vehicle low-frequency noise caused by vibration of the middle area of the back door in the driving process of the back door is solved as much as possible, and consequently the driving experience is affected is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a back door assembly and a vehicle. Background Art

[0002] When the vehicle is driving, the upper end (hinge) and the lower end (lock) of the tailgate are fixed. If the structural stiffness of the tailgate is low, the breathing mode of the tailgate will be reduced, which will seriously affect the driving experience. Specifically, the middle area of ​​the tailgate will produce a breathing-like vibration in the direction of travel. This vibration will compress the air in the car and make the driver and passengers feel uncomfortable such as ear pressure. Utility Model Content

[0003] The main purpose of the utility model is to provide a tailgate assembly, aiming to improve the overall rigidity and strength of the tailgate, improve the breathing mode of the tailgate, and thus improve the driving experience.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a back door assembly, comprising:

[0005] Inner panels;

[0006] an outer plate, matched with the inner plate, the outer plate comprising an upper plate portion, a lower plate portion and a taillight mounting portion arranged in a height direction, the taillight mounting portion being located between the upper plate portion and the lower plate portion and being sequentially connected to each other; and

[0007] A support plate is arranged between the inner plate and the outer plate and is located at the lower plate portion. The taillight mounting portion is recessed toward the inner plate. The support plate is provided with a supporting portion corresponding to the cross-sectional shape of the taillight mounting portion. The supporting portion supports the taillight mounting portion, and the support plate is respectively connected to the inner plate and the outer plate.

[0008] Optionally, the support plates include at least two, at least two of the support plates are spaced apart, and the two support plates are respectively connected to the upper plate portion, the taillight mounting portion, the lower plate portion and the inner plate to form an integral structure.

[0009] Optionally, the supporting portion is provided with a first leg connected to the taillight mounting portion.

[0010] Optionally, a plurality of first weight-reducing holes are provided on the support plate.

[0011] Optionally, it is characterized in that the tailgate assembly also includes a middle reinforcement plate, which is arranged at the side edge of the inner plate, and the side of the middle reinforcement plate away from the edge of the inner plate is bent toward the taillight mounting portion to form a second leg, and the second leg is connected to the taillight mounting portion.

[0012] Optionally, a middle portion of the middle reinforcing plate bulges toward one side of the outer plate to form a first cavity.

[0013] Optionally, the inner plate is provided with a second weight reducing hole, which is located in the middle of the inner plate and close to the taillight mounting part. The edge of the second weight reducing hole extends a flange section toward the taillight mounting part, and the flange section is connected to the taillight mounting part.

[0014] Optionally, the tailgate assembly further includes a hinge reinforcement plate, wherein the hinge reinforcement plate is connected to the inner panel, and an edge of the outer panel extends and covers an edge of the hinge reinforcement plate and an edge of the inner panel.

[0015] Optionally, a second cavity is formed between the inner plate and the upper plate portion, and a middle portion of the inner plate and / or the hinge reinforcement plate bulges toward the upper plate portion to form a reinforcement rib, and the reinforcement rib separates the second cavity.

[0016] Optionally, the edge of the hinge reinforcement plate and the edge of the upper plate portion are pre-fixed by welding.

[0017] The utility model also provides a vehicle, comprising the tailgate assembly as described above.

[0018] The technical solution of the utility model adopts a support plate, which is arranged between the inner plate and the outer plate and is located at the lower plate part. The taillight mounting part is recessed toward the inner plate, and the support plate is provided with a supporting part corresponding to the cross-sectional shape of the taillight mounting part, and the supporting part supports the taillight mounting part. The support plate is respectively connected to the inner plate and the outer plate, and the taillight mounting part is supported by the supporting part. The inner plate and the outer plate are connected into an integral structure by the support plate, so as to solve the problem that the design space of the taillight mounting part is compressed due to the large space structure occupied by the taillight mounting part, thereby causing a sudden change in the structural stiffness of the taillight in the taillight mounting area; the support plate plays a reinforcing and connecting role at the weak position of the taillight structure, thereby improving the stiffness and strength of the taillight; avoiding the durability problem of the taillight, improving the breathing mode of the taillight to reduce the low-frequency noise in the car; because no complex parts structure is required, lightweight design requirements are met. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1It is a structural schematic diagram of an embodiment of a back door assembly of the utility model;

[0021] Figure 2 for Figure 1 A schematic structural diagram of an embodiment of a middle and outer plate;

[0022] Figure 3 is a schematic cross-sectional view of an embodiment of a back door assembly;

[0023] Figure 4 A structural schematic diagram of an embodiment in which a support plate is connected to an outer plate;

[0024] Figure 5 A schematic structural diagram of an embodiment in which a middle reinforcement plate is connected to an outer plate;

[0025] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure at the middle reinforcement plate;

[0026] Figure 7 It is a structural schematic diagram of the other side of the back door assembly;

[0027] Figure 8 for Figure 7 A schematic cross-sectional view of an embodiment of the present invention;

[0028] Fig. 9 It is a schematic diagram of the cross-sectional structure of the connection between the hinge reinforcement plate, the upper plate portion and the inner plate;

[0029] Fig.10 for Fig. 9 A partial enlarged view of point A in the middle.

[0030] Description of Figure Numbers:

[0031]

[0032]

[0033] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0037] When the vehicle is driving, the upper end (hinge) and the lower end (lock) of the tailgate are fixed. If the structural stiffness of the tailgate is low, the breathing mode of the tailgate will be reduced, which will seriously affect the driving experience. Specifically, the middle area of ​​the tailgate will produce a breathing-like vibration in the direction of travel. This vibration will compress the air in the car and make the driver and passengers feel uncomfortable such as ear pressure.

[0038] To this end, the utility model proposes a tailgate assembly, which aims to improve the overall stiffness and strength of the tailgate, reduce the risk of cracking of sheet metal and welds, and optimize as much as possible the low-frequency noise in the vehicle caused by the vibration of the middle area of ​​the tailgate during driving, thereby affecting the driving experience.

[0039] Reference Figure 1 In one embodiment of the utility model, the back door assembly 100 includes an inner panel 110, an outer panel 120 and a support panel 130. The outer panel 120 cooperates with the inner panel 110. The outer panel 120 includes an upper panel portion 121 and a lower panel portion 122 arranged along the height direction. The support panel 130 is arranged between the inner panel 110 and the outer panel 120 and is located at the lower panel portion 122. The support panel 130 is connected to the inner panel 110 and the outer panel 120 respectively.

[0040] The rear door of a car, as an important part of the vehicle, has a crucial impact on the service life and driving experience of the vehicle due to its structure and performance. It is mainly composed of an inner panel 110, an outer panel 120, a reinforcement panel and other components, and each part works together to provide good performance for the vehicle.

[0041] The design of the outer panel 120 is mainly determined by the overall shape of the car, and not only the appearance should be considered, but also the brand characteristics of the car should be highlighted. The design requirements of the outer panel 120 are high, and it is necessary to take into account both the appearance and practicality, while taking into account the safety performance of the vehicle.

[0042] The inner panel 110 has a more diverse role. It not only carries accessories such as trim panels and wiper motors, but also provides important support for the overall rigidity and strength of the tailgate. The design of the inner panel 110 needs to fully consider the weight of the accessories it carries and the harsh environment that the vehicle may encounter during use, to ensure the stability and safety of the tailgate.

[0043] The innovative design proposed in this scheme is to add a support plate 130, place it between the inner plate 110 and the outer plate 120, and be located at the lower plate portion 122. The support plate 130 is connected to the inner plate 110 and the outer plate 120 respectively, and the two are tightly combined into an integral structure. In this way, the support plate 130 can play a role in reinforcing and connecting the weak positions of the tailgate structure, greatly improving the rigidity and strength of the tailgate. More importantly, this design can avoid durability problems of the tailgate during use and increase its service life. At the same time, the design of the support plate 130 can also reduce low-frequency noise in the car and improve driving comfort. Since the design of the support plate 130 is simple and does not require a complex parts structure, it meets the requirements of lightweight design and is conducive to improving the overall performance of the vehicle.

[0044] In order to ensure the stability of the overall structure formed by the connection, the support plate 130 is fixed to the inner plate 110 and the outer plate 120 by welding.

[0045] Reference Figure 2 Furthermore, in order to solve the problem of cracking of sheet metal and welding points in the taillight installation area of ​​the rear door, the outer panel 120 also includes a taillight installation portion 150, and the taillight installation portion 150 is located between the upper panel portion 121 and the lower panel portion 122, and is connected to each other in sequence.

[0046] There are at least two support plates 130 , and the at least two support plates 130 are spaced apart from each other. The two support plates 130 are respectively welded to the upper plate portion 121 , the taillight mounting portion 150 , the lower plate portion 122 , and the inner plate 110 to form an integral structure.

[0047] As more and more models adopt the through-type taillight design, the larger space occupied by the structure leads to the compression of the design space of the tailgate. This forces the taillight mounting part 150 to be adjusted inward, and the gap between it and the inner panel 110 is reduced, so that the structural stiffness of the tailgate in the taillight mounting area changes suddenly. This stiffness mutation not only seriously affects the overall stiffness of the tailgate, resulting in a decrease in its breathing mode and the generation of low-frequency noise in the car, but also makes the taillight mounting area of ​​the tailgate a structural weakness. In the closing durability and road durability tests, this area often has problems with sheet metal and weld cracking. The two support plates 130 are respectively welded to the upper plate 121, the taillight mounting part 150, the lower plate 122 and the inner panel 110 to form an integral structure, which greatly improves the stiffness and strength of the taillight mounting plate area of ​​the tailgate.

[0048] Reference Figure 2 and Figure 3 Specifically, the taillight mounting portion 150 is recessed toward the inner plate 110 , and the support plate 130 is provided with a supporting portion 131 corresponding to the cross-sectional shape of the taillight mounting portion 150 , and the supporting portion 131 supports the taillight mounting portion 150 , and the supporting portion 131 is provided with a first leg 132 welded to the taillight mounting portion 150 .

[0049] Reference Figure 3 and Figure 4 The back door has a door window, and the support plate 130 forms a supporting portion 131 near the door window. The supporting portion 131 is L-shaped. The recessed portion of the taillight mounting portion 150 is placed on the supporting portion 131. The supporting portion 131 has two first legs 132 arranged in an L path, and is connected to the taillight mounting portion 150 through the first legs 132; in addition, the support plate 130 and the inner plate 110 are welded together through the welding feet 133, and the support plate 130 and the inner plate 110 and the upper outer plate 120 are welded together through the welding feet 133 (three-layer welding points), so that these four parts overlap each other in this area to form a whole Compared with the existing solution, the support plate 130 is arranged separately between the outer plate 120 and the inner plate 110. The four parts of the inner plate 110 and the outer plate 120 form an integral structure through the support plate 130, which greatly improves the rigidity and strength of the taillight mounting plate area of ​​the rear door. It can solve the problem that the cross-section of the rear door structure in the taillight mounting area is sharply reduced due to the compression of the taillight mounting part 150 and the gap between the inner plate 110, resulting in a sudden change in the rigidity of the rear door structure, which often leads to cracking of the sheet metal and welding points in the taillight mounting area during closing durability and road durability.

[0050] Reference Figure 3 Furthermore, a plurality of first weight-reducing holes 134 are provided on the support plate 130 .

[0051] In order to achieve a lightweight design, first weight-reducing holes 134 are provided in a large surface area of ​​the outer panel 120 support plate 130. In the present embodiment, three first weight-reducing holes 134 are provided; in other embodiments, the first weight-reducing holes 134 may also be other numbers, such as one, two, four, etc.

[0052] Specifically, a plurality of first lightening holes 134 are provided with a sink 136 recessed toward one side around the hole periphery to strengthen the strength of the support plate 130. Each first lightening hole 134 is provided with a sink 136 feature to reduce the influence of the lightening hole on the rigidity of the support plate 130.

[0053] Reference Figure 5 Furthermore, the tailgate assembly 100 also includes a middle reinforcement plate 160, which is arranged at the side edge of the inner plate 110, at the edge of the inner plate 110 corresponding to the convergence of the upper plate portion 121, the taillight reinforcement portion 150 and the lower plate portion 122, and the middle reinforcement plate 160 is bent toward the taillight mounting portion 150 away from the edge of the inner plate 110 to form a second leg 161, and the second leg 161 is connected to the taillight mounting portion 150.

[0054] Specifically, two middle reinforcing plates 160 are provided, and the two middle reinforcing plates 160 are respectively located on both sides of the inner plate 110, close to the middle of the inner plate 110. It can be understood that the through-type taillight is arranged on the taillight mounting part 150, and the taillight mounting part 150 spans the vehicle door. The second leg 161 extending through the two middle reinforcing plates 160 on the left and right sides is welded to the taillight mounting part 150, thereby supporting the taillight mounting part 150 on both sides to form a support for the taillight mounting part 150.

[0055] To facilitate welding, a corresponding avoidance hole 111 is provided on the inner panel 110 to facilitate welding of the second leg 161 to the taillight mounting portion 150; and the other side of the middle reinforcement plate 160 is welded to the upper outer panel 120 and the inner panel 110, and is welded to the side and lower part of the inner panel 110.

[0056] Reference Figure 6 Specifically, the middle part of the middle reinforcing plate 160 bulges toward one side of the outer plate 120 to form a first cavity 104. By appropriately raising the middle area of ​​the middle reinforcing plate 160, a first cavity 104 is formed between the inner plate 110. Such a design can better meet the size requirements between the inner plate 110 and the reinforcing plate of the inner plate 110, and facilitate assembly. The first cavity 104 of the middle reinforcing plate 160 of the inner plate 110 is formed through the gap and the above-mentioned connecting welds, thereby forming a closed annular reinforcement structure 170 to improve the strength of the structure.

[0057] Reference Figure 7 Furthermore, the inner plate 110 is provided with a second weight-reducing hole 112 , and the second weight-reducing hole 112 is located in the middle of the inner plate 110 and close to the taillight mounting portion 150 .

[0058] The provision of the second weight-reducing hole 112 not only realizes a lightweight structural design, but specifically, the edge of the second weight-reducing hole 112 extends a flange section 113 toward the taillight mounting portion 150 and is connected to the taillight mounting portion 150. The connection with the taillight mounting portion 150 through the flange section 113 further improves the strength of the structure. In addition, the flange section 113 and the taillight mounting portion 150 overlap to form a closed annular reinforcement structure 170.

[0059] The support plate 130 and the flange section 113 jointly support the middle area of ​​the taillight mounting portion 150 , while the two middle reinforcement plates 160 support both sides of the taillight mounting portion 150 , which greatly improves the rigidity and strength of the rear door taillight mounting portion 150 .

[0060] Reference Figure 7 and Figure 8 Furthermore, in order to meet the requirements of lightweight, the inner plate 110 is also provided with a third weight-reducing hole 135. The third weight-reducing hole 135 is arranged in the shape of letter B on both sides of the second weight-reducing hole 112 and is roughly symmetrically distributed.

[0061] It should be noted that, if necessary, the third weight-reducing hole 135 can also extend out of the flange and be connected to the taillight mounting plate to further improve the rigidity of the local area.

[0062] Specifically, a sink 136 is provided around the second lightening hole 112 and the third lightening hole 135 .

[0063] By setting the structural form of the sinking platform 136, not only the rigidity of the second weight-reducing hole 112 and the third weight-reducing hole 135 is strengthened, but also a main reinforcing beam structure 180 is formed at the lower part of the inner plate 110, and the reinforcing beams are integrated with each other to further form a "Y"-shaped reinforcing beam structure 180.

[0064] The third lightening holes 135 and the reinforcing beams form two “B”-shaped reinforcing beam structures 180 .

[0065] A tailgate lock is also provided at the bottom of the inner panel 110 , and the tailgate lock is recessed to form a mounting sink 136 . The second weight-reducing hole 112 , the reinforcing beam structure 180 and the lower tailgate lock mounting sink 136 further form an “H”-shaped reinforcing beam structure 180 .

[0066] Through the above structural design, the weight-reducing holes, the countersunk platform 136 and the flanges are integrated with each other to form a skeleton structure of the lower area of ​​the inner panel 110, which not only greatly improves the overall panel stiffness of the lower area of ​​the tailgate inner panel 110 and the stiffness of various installation points arranged on the lower area of ​​the inner panel 110, but also realizes the lightweight structural design of the inner panel 110.

[0067] Compared with the traditional solution in which the rear door is reinforced by filling structural rubber blocks between the taillight mounting plate and the inner panel 110 when the through-type taillight squeezes the gap between the taillight mounting plate and the inner panel 110, which is more costly, this solution improves the overall stiffness, strength and breathing mode of the rear door, avoids the durability problem of the rear door with through-type taillights, and reduces the overall weight of the rear door to achieve a lightweight design. The design structure is simple, the material strength requirement is not high, and it is suitable for rear doors of various through-type taillights. The structure is highly versatile and the process is easy to implement.

[0068] Combination Figure 1 And refer to Fig. 9 Furthermore, the tailgate assembly 100 also includes a hinge reinforcement plate 101, which is connected to the inner panel 110, and the edge of the outer panel 120 extends and covers the edge of the hinge reinforcement plate 101 and the edge of the inner panel 110, and the edge of the hinge reinforcement plate 101, the edge of the outer panel 120 and the edge of the upper panel 121 are wrapped together as a whole.

[0069] Specifically, the edge of the hinge reinforcement plate 101 and the edge of the upper plate portion 121 are pre-fixed by welding.

[0070] Furthermore, a second cavity 105 is formed between the inner plate 110 and the upper plate portion 121 , and the middle portion of the inner plate 110 and / or the hinge reinforcement plate 101 bulges toward the outer plate 120 to form a reinforcement rib 102 , and the reinforcement rib 102 divides the second cavity 105 to form an annular reinforcement structure 170 .

[0071] In the conventional solution, the hinge reinforcement plate 101 and the inner plate 110 are fixed by welding, but there is a problem that the edge of the hinge reinforcement plate 101 is warped. In this solution, an extension section 103 is added upward to the hinge reinforcement plate 101. The extension section 103 is pre-welded to the inner plate 110 through a welding point to prevent the extension section 103 from deforming or the extension section 103 and the inner plate 110 from having a gap, which may cause poor hemming. Then, the edge of the inner plate 110, the extension section 103, and the edge of the upper outer plate 120 are hemmed at the same time (such as Fig.10 As shown), this structural design makes the structure at the extension section 103 position an integral whole, greatly improving the rigidity of the flange position.

[0072] At the same time, through the welding points between the hinge reinforcement plate 101 and the inner plate 110, the three-layer welding points between the inner plate 110, the hinge reinforcement plate 101 and the upper outer plate 120, and the thick reinforcing ribs 102 protruding from the hinge reinforcement plate 101, the hinge installation area is divided into two complete annular closed cavities to form an annular reinforcement structure 170, which can greatly improve the rigidity of the hinge reinforcement plate 101 area.

[0073] The utility model also provides a vehicle, which includes a vehicle body and a back door assembly 100. The specific structure of the back door assembly 100 refers to the above embodiments. Since the vehicle body adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, the back door assembly 100 is connected to the vehicle body through a hinge, and is locked / separated from the vehicle body through a lock.

[0074] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the concept of the utility model, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A back door assembly, characterized in that: include: Inner panels; an outer plate, matched with the inner plate, the outer plate comprising an upper plate portion, a lower plate portion and a taillight mounting portion arranged in a height direction, the taillight mounting portion being located between the upper plate portion and the lower plate portion and being sequentially connected to each other; and A support plate is arranged between the inner plate and the outer plate and is located at the lower plate portion. The taillight mounting portion is recessed toward the inner plate. The support plate is provided with a supporting portion corresponding to the cross-sectional shape of the taillight mounting portion. The supporting portion supports the taillight mounting portion, and the support plate is respectively connected to the inner plate and the outer plate.

2. The tailgate assembly according to claim 1, characterized in that: The support plates include at least two, and the at least two support plates are arranged at intervals, and the two support plates are respectively connected to the upper plate portion, the taillight mounting portion, the lower plate portion and the inner plate to form an integral structure.

3. The tailgate assembly according to claim 2, characterized in that: The supporting portion is provided with a first leg connected to the taillight mounting portion.

4. The tailgate assembly according to claim 3, characterized in that: The support plate is provided with a plurality of first weight-reducing holes.

5. The tailgate assembly according to any one of claims 1 to 4, characterized in that: The rear door assembly also includes a middle reinforcement plate, which is arranged at the side edge of the inner plate, and the side of the middle reinforcement plate away from the edge of the inner plate is bent toward the taillight mounting portion to form a second leg, and the second leg is connected to the taillight mounting portion.

6. The tailgate assembly according to claim 5, characterized in that: The middle portion of the middle reinforcing plate bulges toward one side of the outer plate to form a first cavity.

7. The tailgate assembly according to any one of claims 2 to 4, characterized in that: The inner plate is provided with a second weight-reducing hole, which is located in the middle of the inner plate and close to the taillight mounting portion. The edge of the second weight-reducing hole extends a flange section toward the taillight mounting portion, and the flange section is connected to the taillight mounting portion.

8. The tailgate assembly according to any one of claims 1 to 4, characterized in that: The rear door assembly further includes a hinge reinforcement plate, which is connected to the inner panel, and the edge of the outer panel extends and covers the edge of the hinge reinforcement plate and the edge of the inner panel.

9. The tailgate assembly according to claim 8, characterized in that: A second cavity is formed between the inner plate and the upper plate portion, and a middle portion of the inner plate and / or the hinge reinforcement plate bulges toward the upper plate portion to form a reinforcement rib, and the reinforcement rib divides the second cavity; And / or, the edge of the hinge reinforcement plate and the edge of the upper plate portion are pre-fixed by welding.

10. A vehicle, characterized in that: The invention comprises a tailgate assembly as claimed in any one of claims 1 to 9.

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